Texas Instruments SR-10

Datasheet legend
Ab/c: Fractions calculation
AC: Alternating current
BaseN: Number base calculations
Card: Magnetic card storage
Cmem: Continuous memory
Cond: Conditional execution
Const: Scientific constants
Cplx: Complex number arithmetic
DC: Direct current
Eqlib: Equation library
Exp: Exponential/logarithmic functions
Fin: Financial functions
Grph: Graphing capability
Hyp: Hyperbolic functions
Ind: Indirect addressing
Intg: Numerical integration
Jump: Unconditional jump (GOTO)
Lbl: Program labels
LCD: Liquid Crystal Display
LED: Light-Emitting Diode
Li-ion: Lithium-ion rechargeable battery
Lreg: Linear regression (2-variable statistics)
mA: Milliamperes of current
Mtrx: Matrix support
NiCd: Nickel-Cadmium rechargeable battery
NiMH: Nickel-metal-hydrite rechargeable battery
Prnt: Printer
RTC: Real-time clock
Sdev: Standard deviation (1-variable statistics)
Solv: Equation solver
Subr: Subroutine call capability
Symb: Symbolic computing
Tape: Magnetic tape storage
Trig: Trigonometric functions
Units: Unit conversions
VAC: Volts AC
VDC: Volts DC
Years of production:   Display type: 7-segment
New price:  
 Display color: Red
    Display technology: LED
Size: 6½"×3"×1½" Display size: 8+2 digits
Weight: 10 oz    
    Entry method: Algebraic
Batteries: 3*×"AA" NiCd or alkaline Advanced functions: N/A
External power: TI adapter Memory functions: N/A
I/O: N/A    
    Programming model: N/A
Precision: 8 digits Program functions: N/A
Memories: N/A
 Program display: N/A
Program memory: N/A
 Program editing: N/A
Chipset:   Forensic result:  

*Older versions of this calculator used 4 "AA" battery cells.

sr10pr.jpg (22595 bytes)The SR-10 is a truly ancient Texas Instruments calculator. It is one of the first "electronic slide-rule" calculators, and predates the first true scientific calculators from this company. It does, however, have some scientific features, such as an exponential display and keys for calculating the reciprocal, square, and square root.

Back label imageLike other four-function calculators, the SR-10 doesn't belong to my collection of programmable calculators. Recently, however, I came into the possession of what appears to be a genuine SR-10 prototype, as evidenced by the back label of this machine. I have since traded this calculator for another machine, but it deserves to be mentioned anyway due to its uniqueness.