Minor Brands
Next to the four giants, Casio, Hewlett-Packard, Sharp and Texas Instruments, a large number of other manufacturers produced programmable calculators. Some are unique, one-of-a-kind designs, while others are simple OEM labels.
Classic Manufacturers
Next to the four giants, Casio, Hewlett-Packard, Sharp and Texas Instruments, a large number of other manufacturers produced programmable calculators. Some are unique, one-of-a-kind designs, while others are simple OEM labels.
APF
A long forgotten manufacturer from the early days, APF made a single programmable model using the same chipset used in the Commodore PR-100.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | Mark 90 | Scientific | 8+2 LED digits | Keystroke entry (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Unit conversions |
 | SC-31A | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Commodore
Before the legendary Commodore 64, Commodore was a manufacturer of office equipment. In the early 1970s, they manufactured many excellent calculators, among them some unique specialty models for mathematics, navigation, and statistics, and also two programmable models.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | P50 | Scientific | 8+2 LED digits | Keystroke entry (24 program steps) | Conditionals, Branching | 1 numbers | Trigonometrics, Exponentials |
 | PR-100 | Scientific | 8+2 LED digits | Keystroke entry (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Unit conversions |
Compucorp
Arguably the most legendary of them all, Compucorp made portable programmable calculators before anybody else. Sold also under the Monroe and SUMLock brand names, these early, large machines used size "D" batteries, weighed about 4lbs each, and packed a stack of five circuit boards and a high-voltage plasma fluorescent (Panaplex) display in an incredibly compact package.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | 322G Scientist | Scientific | 10+2 PFD digits | Keystroke entry (80 program steps) | 10 numbers | Trigonometrics, Exponentials | |
 | 324G Scientist | Scientific | 10+2 PFD digits | Keystroke entry (160 program steps) | 10 numbers | Trigonometrics, Exponentials | |
 | 326 Scientist | Scientific | 10+2 PFD digits | Partially merged keystroke (160 program steps) | Conditionals, Branching, Subroutines, Labels | 12 numbers | Trigonometrics, Exponentials, Magnetic tape, Unit conversions |
 | 342 Statistician | Statistical | 10+2 PFD digits | Keystroke entry (80 program steps) | 10 numbers | Exponentials, Linear regression | |
 | 344 Statistician | Statistical | 10+2 PFD digits | Keystroke entry (160 program steps) | 10 numbers | Exponentials, Linear regression | |
 | 354 Surveyor | Scientific | 10+2 PFD digits | Keystroke entry (160 program steps) | 10 numbers | Trigonometrics |
Litronix
Litronix, another early, long-forgotten manufacturer of calculators, produced a single programmable model: possibly the most ridiculous programmable calculator ever made. (The 'R' model is the same calculator with rechargeable batteries.)
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | 2290 | N/A | 8 LED digits | Keystroke entry (10 program steps) | 1 numbers | ||
| No Image Available | 2290R | N/A | 8 LED digits | Keystroke entry (10 program steps) | 1 numbers |
National Semiconductor
It has been said that in the early days, pocket calculators represented a significant new market for integrated circuit manufacturers. It should come as no surprise, then, that a major integrated circuit manufacturer like National Semiconductor entered this marketplace with several calculator models. What is somewhat surprising is the relatively low quality and clumsy design of these early models. National Semiconductor also designed a high-end programmable calculator, but apart from a few prototypes that were sent to reviewers, this machine never saw the light of day. National Semiconductor machines were also sold under the Novus brand name and some models were also licensed to OEMs.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | 4515 Mathematician PR | RPN Scientific | 8 LED digits | Keystroke entry (102 program steps) | 1 numbers | Trigonometrics, Exponentials | |
 | 4525 Scientist PR | RPN Scientific | 8+2 LED digits | Keystroke entry (102 program steps) | 1 numbers | Trigonometrics, Exponentials | |
 | 4615 | RPN Scientific | 8 LED digits | Keystroke entry (102 program steps) | 1 numbers | Trigonometrics, Exponentials | |
 | 6025 Financier PR | Financial | 8 LED digits | Keystroke entry (102 program steps) | 1 numbers | Financial | |
 | 6035 Statistician PR | Statistical | 8 LED digits | Keystroke entry (102 program steps) | 1 numbers | Linear regression | |
 | Cops Pocket Assistant | Emulator | 8 LED 7-segment characters | Machine-language program (32 bytes) | Conditionals, Branching, Subroutines, Indirect addressing | 16 bytes | Sound |
| Unconfirmed sighting | NS-128 | N/A | |||||
| No Image Available | NS-7100 | Scientific | LED digits | Fully-merged keystroke entry (240 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 32 numbers | Trigonometrics, Exponentials, Standard deviation, Continuous memory, Unit conversions |
Qualitron
Almost forgotten now, Qualitron produced several early LED calculator models, on of which, a programmable unit, was an OEM variant of the National Semiconductor 4515.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | 1421 Programmable Scientific | RPN Scientific | 8 LED digits | Keystroke entry (102 program steps) | 1 numbers | Trigonometrics, Exponentials |
Sinclair
Known for a wide range of innovative products ranging from an electric vehicle to one of the most successful line of personal computers, the legendary British manufacturer also produced an impressive array of low-cost calculators. Three models were programmable.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | Cambridge Programmable | Scientific | 8(5+2) LED digits | Keystroke entry (36 program steps) | Conditionals, Branching | 1 numbers | Trigonometrics, Exponentials |
 | Enterprise Programmable | Scientific | 8(5+2) LED digits | Partially merged keystroke (79 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials |
 | Scientific Programmable | RPN Scientific | 5+2 VFD digits | Keystroke entry (24 program steps) | 1 numbers | Trigonometrics, Exponentials |
Other Brands
Many other major brands manufacture calculators today; some are original designs, others are OEM models.
Canon
Were it not for the relatively small number of programmable calculators produced, Canon would stand next to Casio and Sharp as yet another Japanese manufacturer that has been around since the early years, and continues to produce new calculators today. Some Canon models are also produced by other manufacturers as OEM products (although truth to tell, I am not entirely certain whether or not it was the Canon model that was the original.)
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | F-300P | Scientific | 120×32 LCD pixels | Formula programming (336 program steps) | Branching | 48(6) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory |
 | F-700 | Scientific | 10+2 LCD digits | Partially merged keystroke (64 program steps) | Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Complex, Continuous memory, baseN, Unit conversions, Constants |
 | F-73P | Scientific | 10(8+2) LCD digits | Partially merged keystroke (45 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN, Unit conversions |
 | F-800P | Scientific | 10+2 LCD digits | Partially merged keystroke (128 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
 | F-802P | Scientific | 10+2 LCD digits | Partially merged keystroke (128 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
| No Image Available | F-803P | Scientific | 10+2 LCD digits | Partially merged keystroke (256 program steps) | Conditionals, Branching | 2 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
| No Image Available | FG-1000 | Graphing | LCD pixels | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Continuous memory | |||
 | FP-11P | Scientific | 10(8+2) LCD digits | Partially merged keystroke (45 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, Printer, Unit conversions |
 | X-07 | Graphing | 120×32 LCD pixels | BASIC (6726 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 6726(0) bytes | Trigonometrics, Exponentials, Graphing, Continuous memory, Real-time clock, Sound |
Olivetti
Few names are more legendary than that of the renowned Italian manufacturer, best known for the beautiful exterior design of their machines. Olivetti produced many calculators, but few were programmable; apart from an early, AC-only desktop machine, the only one I am aware of is a Canon OEM model.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | SC-1082 | Scientific | LCD | Formula programming | 38 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Fractions | |
 | SC2000 | Scientific | 10+2 LCD digits | Partially merged keystroke (128 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
Panasonic
Panasonic was one of the first entrants into the field of pocket computers. More recently, what appears to be a Canon OEM programmable model (although in a different style housing) was released under the Panasonic brand name.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | JE-554U | Scientific | 10+2 LCD digits | Partially merged keystroke (128 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
 | RL-H1000 | BASIC Programmable | 26.5 LCD characters | BASIC (1 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 1(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Real-time clock, Sound |
 | RL-H1400 | BASIC Programmable | 26.5 LCD characters | BASIC (4 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 4(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Real-time clock, Sound |
 | RL-H1800 | BASIC Programmable | 26.5 LCD characters | BASIC (8 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 8(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Real-time clock, Sound |
Phillips
Another classic brand name, another OEM-branded Canon programmable.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SBC-1745N | N/A | LCD | ||||
 | SBC-1746 | Scientific | 10+2 LCD digits | Partially merged keystroke (128 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
Sanyo
A surprising find: under a brand name best known for consumer electronics, an early programmable calculator similar in style and function to early Commodore models.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | CZ-0911PG | Scientific | 8+2 VFD digits | Partially merged keystroke (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials |
 | PHC-8000 | BASIC Programmable | 24 LCD characters | BASIC (4 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 4(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Sound |
Pocket/Portable Computers
Some legendary manufacturers in the 1970s and early 1980s made their mark by producing exclusively pocket computers.
Amstrad
Yet another well-known name.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | NC100 | N/A | LCD pixels |
Atari
Atari is known best in North America for their game consoles, and in other parts of the word for their ST line of 16-bit personal computers. Few remember that the world's first MS-DOS compatible pocket computer, although not originally developed by Atari, was in fact released under the Atari brand.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | Portfolio | Graphing | 240×64 LCD pixels | Spreadsheet data (128 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 128(0) kilobytes | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Continuous memory, Sound, Matrix |
dip
Atari's pocket computer was not an in-house product. It was developed by Distributed Information Processing Ltd., a little known British firm that was a true pioneer.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | POCKET pc | Graphing | 240×64 LCD pixels | Spreadsheet data (128 kilobytes) | Conditionals, Branching, Subroutines, Indirect addressing | 128(0) kilobytes | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Continuous memory, Real-time clock, Sound, Matrix |
EPSON
EPSON, best known for its dot matrix printers throughout the 1980s, was also among the early pioneers to produce a practical, good quality handheld computer.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | HX-20 | BASIC Programmable | 120×32 LCD pixels | BASIC (12891 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 12891(0) bytes | Trigonometrics, Exponentials, Continuous memory, Printer, Real-time clock, Sound, Magnetic tape |
NEC
However well known a brand name in electronics NEC is in general, it doesn't appear on many pocket calculators or computers.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | PC-2001 | BASIC Programmable | 2×40 LCD characters | BASIC (6 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 6(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Sound |
Quasar
Possibly the brand name under which the concept of a "pocket computer" was first introduced.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | HK2600TE | N/A |
Seiko
Another brand name known best for watches, Seiko also produced at least one handheld computer.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | MC-2200 | N/A | LCD | (1 kilobytes) |
Toshiba
Toshiba was an early participant in the calculator market, but none of their models that I know were programmable. They did, however, have at least one handheld computer.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | IHC-8000 | BASIC Programmable | 24 LCD characters | BASIC (3 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 3(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Sound |
OEM/Store Labels
Not all is gold that glitters. Not all brand names are really brand names: indeed, some of the best known brands, like Radio Shack in North America, MBO, Privileg, or Prinztronic in Europe are really OEM brands.
Aurex
An OEM brand I recently came across.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SC-109P | Scientific | 10+2 LCD digits | Formula programming (100 program steps) | 28 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Fractions, Continuous memory, baseN, Constants, Equation library | |
 | SC-6103 | Scientific | 10+2 LCD digits | Formula programming (79 program steps) | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Solver, Integration, Fractions, Complex, Continuous memory, baseN |
Aurora
A minor OEM brand, some simple programmable models.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | DS17 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | FN1000 | Financial | 10(8+2) LCD digits | Fully-merged keystroke entry (100 program steps) | Conditionals, Branching | 20(7) numbers | Exponentials, Linear regression, Financial, Continuous memory |
 | SC180 | Scientific | 10+2 LCD digits | (128 program steps) | Conditionals, Branching | 2 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
| Unconfirmed sighting | SC190 | N/A | 10+2 LCD digits | Partially merged keystroke (255 program steps) | 2 numbers | ||
 | TB607 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Hanimex
Yet another OEM brand name with a single known programmable.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SPC 1090 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (45 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN, Unit conversions |
Ibico
A brand name best known for office calculators. Again, only a single programmable model.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | 098 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Intertronic
I know that I've seen before the Intertronic name, although I cannot quite tell where. Perhaps a low-cost store brand name in Europe?
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SC-88P | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Knight
Minor OEM brand, single low-end programmable.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | K-31A | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
MBO
A very well known brand name to this day, MBO was among the first to produce an OEM-labelled calculator in the 1970s.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | Alpha 604 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
| No Image Available | Alpha 610 PR | Scientific | 8+2 LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | Alpha 82 PR | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | Alpha 820 PR | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | Programmer | Scientific | 10(8+2) VFD digits | Keystroke entry (127 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 11 numbers | Trigonometrics, Exponentials |
MCI
A single programmable model was released under this brand name.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SLC-604 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Olympia
A venerable German typewriter manufacturer, Olympia has also become a well-known brand name of office calculators. In the early 1980s, Olympia also sold a classic Hand Held Computer (HHC) under its own brand name.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | HHC | BASIC Programmable | 26.5 LCD characters | BASIC (4 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 4(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Real-time clock, Sound |
 | OP-544 | Scientific | 12 LCD characters | BASIC (544 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 544(0) bytes | Trigonometrics, Exponentials, Continuous memory, Sound |
PiraComp
A label I never saw before, PiraComp seems more than just a bogus name like that found on many Far Eastern knockoffs; the nicely packaged calculator I have bearing their label came with a one-year warranty and a small but detailed German-language manual.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | PR-40 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Privileg
A very well known brand name of the Quelle department store chain in Germany, the Privileg label was used for many OEM calculators, including several interesting programmable models.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | LC-650PR | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | LC-814PR | Scientific | 10(8+2) LCD digits | Partially merged keystroke (45 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN, Unit conversions |
| No Image Available | PR-55NC | RPN Scientific | 8+2 LED digits | Keystroke entry (102 program steps) | 1 numbers | Trigonometrics, Exponentials | |
 | PR-56D-NC | Scientific | 8+2 VFD digits | Partially merged keystroke (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials |
 | PR-57NC | Scientific | 8+2 LED digits | Keystroke entry (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Unit conversions |
 | SR-12PR | Scientific | 10+2 LCD digits | Partially merged keystroke (128 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Continuous memory, baseN, Unit conversions, Constants |
Prinztronic
A store OEM brand from the United Kingdom. Its single programmable model is a Qualitron 1421 in disguise.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | Programmable 40 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | Programmable Scientific | RPN Scientific | 8 LED digits | Keystroke entry (102 program steps) | 1 numbers | Trigonometrics, Exponentials |
Radio Shack
Known also as Tandy outside North America, Radio Shack has sold many OEM calculators and pocket computers since the early years. Their impressive lineup included machines from Casio, Sharp, Sinclair and Texas instruments; they also sold pocket computers under their popular TRS-80 label, machines that were in fact relabelled products from Casio and Sharp.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | EC-4000 | Scientific | 8+2 LED digits | Fully-merged keystroke entry (50 program steps) | Conditionals, Branching, Subroutines, Labels | 8 numbers | Trigonometrics, Exponentials |
 | EC-4001 | Scientific | 8(5+2) LED digits | Keystroke entry (36 program steps) | Conditionals, Branching | 1 numbers | Trigonometrics, Exponentials |
 | EC-4004 | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (38 program steps) | Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory |
 | EC-4004 (v2) | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (38 program steps) | Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory |
 | EC-4019 | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (135 program steps) | Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN |
 | EC-4020 | Scientific | 12 LCD characters | Keystroke entry (550 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 94(26) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN |
 | EC-4021 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | EC-4023 | Scientific | 12 LCD characters | Formula programming (675 program steps) | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN, Equation library | |
 | EC-4024 | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (29 program steps) | Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Continuous memory, baseN, Constants, Equation library |
 | EC-4026 | Scientific | 10+2 LCD digits | Formula programming (1103 program steps) | Conditionals, Branching, Subroutines, Labels | 163(26) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN |
 | EC-4027 | Scientific | 10+2 LCD digits | Formula programming (40 program steps) | Branching | 6 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Continuous memory |
 | EC-4033 | Graphing | 40×23 LCD pixels | Formula programming (400 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 78(26) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
 | EC-4034 | Graphing | 96×64 LCD pixels | Formula programming (4 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 4(0) kilobytes | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
 | EC-4036 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | EC-4037 | N/A | LCD pixels | (4 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 4(0) kilobytes | |
| No Image Available | EC-4040 | Scientific | 16 LCD characters | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Fractions, Continuous memory, baseN | ||
 | EC-4044 | Scientific | 12 LCD characters | Formula programming (440 program steps) | 55(0) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Complex, Continuous memory, baseN | |
 | PC-1 | BASIC Programmable | 24 LCD characters | BASIC (2200 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 2200(0) bytes | Trigonometrics, Exponentials, Continuous memory, Sound |
 | PC-2 | BASIC Programmable | 26 LCD characters | BASIC (1850 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 1850(0) bytes | Trigonometrics, Exponentials, Continuous memory, Sound |
 | PC-3 | BASIC Programmable | 24 LCD characters | BASIC (4 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 4(0) kilobytes | Trigonometrics, Exponentials, Continuous memory |
 | PC-4 | BASIC Programmable | 12 LCD characters | BASIC (490 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26(0) numbers | Trigonometrics, Exponentials, Continuous memory |
 | PC-5 | BASIC Programmable | 24 LCD characters | BASIC (4 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 4(0) kilobytes | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, Sound |
 | PC-6 | BASIC Programmable | 24 LCD characters | BASIC (8 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 8(0) kilobytes | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, Sound |
 | PC-7 | BASIC Programmable | 12 LCD characters | BASIC (512 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26(0) numbers | Trigonometrics, Exponentials, Continuous memory |
 | PC-8 | BASIC Programmable | 16 LCD characters | BASIC (1200 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 1200(0) bytes | Trigonometrics, Exponentials, Continuous memory |
Technico
A Taiwanese OEM brand.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | PSR-98 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (45 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN, Unit conversions |
Truly
A low-end OEM brand name.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SC111 | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (29 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Integration, Fractions, Complex, Continuous memory, baseN, Constants, Equation library |
| No Image Available | TG202 | Graphing | 128×64 LCD pixels | Conditionals, Branching, Subroutines, Labels | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory | ||
| No Image Available | TG602 | Graphing | 128×64 LCD pixels | Trigonometrics, Linear regression, Graphing, Fractions |
Walther
A German OEM label.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | LC-604 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Westfalia-Technik
A German OEM label.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | 269878 | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (64 program steps) | Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Complex, Continuous memory, baseN, Unit conversions, Constants |
Eastern European Manufacturers
Pocket calculators were manufactured in several East Bloc countries prior to 1989, including Bulgaria, East Germany, and Poland. However, to my knowledge, only two manufacturers produced programmable models: Hungary's HÃradástechnika, and the Soviet conglomerate Elektronika.
Elektronika
Elektronika produced an impressive lineup of unique, domestically developed calculator models. What is surprising is that these models are clearly not copycat Western machines; while some concepts (e.g., an RPN stack) were borrowed from comparable Western models, many design features are unique, and few, if any, Western components or subassemblies were used during manufacturing.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | B3-21 | RPN Scientific | 8+2 LED digits | Keystroke entry (60 program steps) | Conditionals, Branching, Subroutines | 13 numbers | Trigonometrics, Exponentials |
 | B3-21 (VFD) | RPN Scientific | 8+2 VFD digits | Keystroke entry (60 program steps) | Conditionals, Branching, Subroutines | 13 numbers | Trigonometrics, Exponentials |
 | B3-34 | RPN Scientific | 8+2 VFD digits | Partially merged keystroke (98 program steps) | Conditionals, Branching, Subroutines, Indirect addressing | 14 numbers | Trigonometrics, Exponentials |
| No Image Available | B3-54 | RPN Scientific | 8+2 VFD digits | Partially merged keystroke (98 program steps) | Conditionals, Branching, Subroutines, Indirect addressing | 14 numbers | Trigonometrics, Exponentials |
| No Image Available | MK-161 | Graphing | 128×64 LCD pixels | Partially merged keystroke (64 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 64(0) kilobytes | Trigonometrics, Exponentials, Graphing, Continuous memory, Real-time clock, Sound, baseN |
| No Image Available | MK-47 | RPN Scientific | 8+2 VFD digits | Keystroke entry (60 program steps) | Conditionals, Branching, Subroutines | 8 numbers | Trigonometrics, Exponentials, Magnetic cards |
 | MK-52 | RPN Scientific | 8+2 VFD digits | Partially merged keystroke (105 program steps) | Conditionals, Branching, Subroutines, Indirect addressing | 15 numbers | Trigonometrics, Exponentials |
 | MK-52 (White) | RPN Scientific | 8+2 VFD digits | Partially merged keystroke (105 program steps) | Conditionals, Branching, Subroutines, Indirect addressing | 15 numbers | Trigonometrics, Exponentials |
 | MK-54 | RPN Scientific | 8+2 VFD digits | Partially merged keystroke (98 program steps) | Conditionals, Branching, Subroutines, Indirect addressing | 14 numbers | Trigonometrics, Exponentials |
 | MK-61 | RPN Scientific | 8+2 VFD digits | Partially merged keystroke (105 program steps) | Conditionals, Branching, Subroutines, Indirect addressing | 15 numbers | Trigonometrics, Exponentials |
 | MK-85 | BASIC Programmable | 12 LCD characters | BASIC (2 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 2(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Sound |
 | MK-85M | BASIC Programmable | 12 LCD characters | BASIC (6 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 6(0) kilobytes | Trigonometrics, Exponentials, Continuous memory, Sound |
 | MK-90 | Graphing | 160×64 LCD pixels | BASIC (11824 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 11824(0) bytes | Trigonometrics, Exponentials, Graphing, Continuous memory, Real-time clock, Sound |
| No Image Available | MK-95 | N/A | 160×64 LCD pixels | ||||
| No Image Available | MK-98 | N/A | 160×64 LCD pixels |
HÃradástechnika
Hungary's HÃradástechnika, a small electronics manufacturer in Budapest, produced several calculators that were relabelled Western models. The pocket computer is a Sharp machine. The five programmable models in their lineup came from several different manufacturers: Commodore, National Semiconductor, and Texas Instruments; but perhaps the most surprising of all is an OEM version of the first Soviet programmable.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | PTA-4000 | Scientific | 26 LCD characters | BASIC (1850 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 1850(0) bytes | Trigonometrics, Exponentials, Continuous memory, Sound |
 | PTK-1023 | RPN Scientific | 8+2 LED digits | Keystroke entry (102 program steps) | 1 numbers | Trigonometrics, Exponentials | |
| No Image Available | PTK-1030 | Scientific | 8+2 LED digits | Partially merged keystroke (32 program steps) | 10(8) numbers | Trigonometrics, Exponentials, Linear regression | |
 | PTK-1050 | Scientific | 8+2 LED digits | Fully-merged keystroke entry (50 program steps) | Conditionals, Branching, Subroutines, Labels | 8 numbers | Trigonometrics, Exponentials |
 | PTK-1060 | RPN Scientific | 8+2 LED digits | Keystroke entry (60 program steps) | Conditionals, Branching, Subroutines | 8 numbers | Trigonometrics, Exponentials |
 | PTK-1072 | Scientific | 8+2 LED digits | Keystroke entry (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Unit conversions |
 | PTK-1072-1 | Scientific | 8+2 LED digits | Keystroke entry (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Unit conversions |
 | PTK-1096 | Scientific | 10(8+2) LED digits | Partially merged keystroke (960 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 100(0) numbers | Trigonometrics, Exponentials, Linear regression, Magnetic cards |
NOMA
Looks like Hungary wasn't the only place in Eastern Europe where OEM programmable calculators were manufactured. I recently came across a Polish machine (with a Sharp chip inside) released under the NOMA brand label.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | PR-100 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Other Manufacturers
Manufacturers whose products are not listed elsewhere are shown below.
Ataba
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | DS-738BQ | Scientific | 10+2 LCD digits | (4000 program steps) | 200() numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Integration, Fractions, Continuous memory, baseN | |
| No Image Available | DS-738DQ | Scientific | 10+2 LCD digits | Formula programming (680 program steps) | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Integration, Fractions, Complex, Continuous memory, baseN | ||
| No Image Available | DS-742AQ | Scientific | 10+2 LCD digits | Formula programming (900 program steps) | 9() numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Solver, Integration, Fractions, Complex, Continuous memory, baseN | |
| No Image Available | DS-745 | Scientific | 10+2 LCD digits | (4000 program steps) | 200() numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Integration, Fractions, Continuous memory, baseN |
Ativa
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | AT-36 | Scientific | LCD | Trigonometrics, Exponentials |
BASE10
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | SR1000 | Scientific | 16 LCD characters | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Fractions, Continuous memory, baseN |
Calcom
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | 35 | Scientific | Trigonometrics, Exponentials |
Calcul
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | PSR 98 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (45 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation |
CTTTZEN
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | fx-991ES PLUS | Scientific | 96×32 LCD pixels | Formula programming (98 program steps) | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Solver, Integration, Fractions, Complex, Symbolics, Continuous memory, Sound, Matrix, baseN, Unit conversions, Constants |
Datalogic
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | PC32e | N/A |
Datexx
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | DS-834 | Scientific | 10+2 LCD digits | Formula programming (152 program steps) | 8 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Solver, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants | |
| No Image Available | DS-850 | N/A | LCD | ||||
 | DS-883 | Graphing | 64×32 LCD pixels | Formula programming (30000 bytes) | Conditionals, Branching, Subroutines, Labels | 28 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Integration, Fractions, Complex, Continuous memory, baseN, Unit conversions, Constants |
Dismac
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | HF-300PRG | N/A | |||||
| No Image Available | HF-60PR | N/A |
Dixons
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | Programmable Scientific | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Durabrand
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | 828 | Graphing | 35×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
Dyna-Tone
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | G3/8700 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory | |
 | HK3/8700 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Karce
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | KC-S4600P | Scientific | 10+2 LCD digits | numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Continuous memory | ||
| No Image Available | KC-S6600G | Graphing | LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines | 76(26) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
Kenko
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | KK-2302 | N/A | LCD |
Lexibook
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | GC1000 | Graphing | 35×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 76(26) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
| No Image Available | GC500 | Graphing | 35×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 76(26) numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
Logitech
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | LC-604 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Media H.S.
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SS1000 | Scientific | 10+2 LCD digits | Formula programming ( ) | 27 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Fractions, Continuous memory, baseN, Constants, Equation library |
Merangue
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | SC-818BL | N/A |
Mint Industries
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | M-1234 | Graphing | 35×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
| No Image Available | M-1236 | Graphing | 35×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
National
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | JR.800 | Graphing | 192×64 LCD pixels | BASIC (13374 bytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 13374(0) bytes | Trigonometrics, Exponentials, Graphing, Continuous memory, Real-time clock, Sound |
PEARL
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | PEARL | Scientific | 10+2 LCD digits | Formula programming (100 program steps) | 28 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Fractions, Continuous memory, baseN, Constants, Equation library |
Psion
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | Organiser | N/A | 2×16 LCD characters | Continuous memory, Real-time clock, Sound | |||
| No Image Available | Series 3a | Graphing | 480×160 LCD pixels | BASIC (256 kilobytes) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 256(0) kilobytes | Trigonometrics, Exponentials, Graphing, Continuous memory, Sound |
Radio Spares
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | 202 767 | Scientific | 10+2 LCD digits | Conditionals, Branching | numbers | Trigonometrics, Exponentials, Linear regression, Complex, Continuous memory, baseN, Unit conversions, Constants |
Royal
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | PR-450 | N/A | LCD | (2 kilobytes) |
SainSmart
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | MetaPhix M2 | Graphing | 88×32 LCD pixels | Fully-merged keystroke entry (79 program steps) | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Solver, Integration, Fractions, Complex, Continuous memory, baseN |
Sanshi
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | SS-508 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
Santron
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | Santron 626 | Scientific | 8+2 VFD digits | Partially merged keystroke (72 program steps) | Conditionals, Branching | 10 numbers | Trigonometrics, Exponentials |
| No Image Available | Santronic 600PM | RPN Scientific | 8(5+2) LED digits | ( program steps) | Branching | numbers | Trigonometrics, Exponentials |
Sentry
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | CA756 | Graphing | 33×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
Sigma
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | AK-251 | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (38 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Integration, Fractions, Continuous memory, baseN |
Simvalley Instruments
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | GRC-1000 | Graphing | 64×48 LCD pixels | Formula programming (79 program steps) | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Graphing, Solver, Integration, Fractions, Complex, Continuous memory, baseN |
SMART
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | 65-817 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (40 program steps) | 3 numbers | Trigonometrics, Exponentials, Hyperbolics, Standard deviation, Continuous memory |
SPECTRA
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | SSC-200 | Scientific | 16 LCD characters | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Fractions, Continuous memory, baseN |
TecXon
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | LC-675 | Scientific | 10(8+2) LCD digits | Partially merged keystroke (45 program steps) | Conditionals, Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN, Unit conversions |
Texet
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | GR4F-x | Graphing | 35×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
Tianyan Electronics
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | TY-82MS-3 | Scientific | 10+2 LCD digits | Formula programming (79 program steps) | 9 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Fractions, Complex, Continuous memory |
Top League
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | NS-750 | Graphing | 132×64 LCD pixels | (1200 program steps) | 9() numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Solver, Complex, Continuous memory, Matrix, baseN |
Unknown
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
 | fx-3600p | Scientific | 10+2 LCD digits | Fully-merged keystroke entry (38 program steps) | Branching | 7 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Integration, Fractions, Continuous memory |
 | fx-5000F | Scientific | 10+2 LCD digits | Formula programming (675 program steps) | 10 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Continuous memory, baseN, Constants, Equation library |
Walgreens
| - | Model | Type | Display | Programming model | Programming features | Memory | Special functions |
| No Image Available | ATC-139 | Graphing | 35×23 LCD pixels | Formula programming (400 program steps) | Conditionals, Branching, Subroutines, Labels, Indirect addressing | 26 numbers | Trigonometrics, Exponentials, Hyperbolics, Linear regression, Graphing, Fractions, Continuous memory, baseN |
