Texas Instruments TI-56
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 |
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Texas Instruments TI-56
The model number is legendary: the first '56 from Texas Instruments was the venerable SR-56, a superb first-generation programmable calculator. Alas, the TI-56 is a much simpler device: it is programmable only just barely, with a limited amount of program memory and no branching capability. The TI-56, after all, is just the good old TI-55-III, released under yet another model number.
As a programming example, here is a simple program that implements Stirling's formula that approximates the extended factorial:
00 61 STO
01 00 0
02 65 ×
03 02 2
04 65 ×
05 91 π
06 95 =
07 13 √
08 65 ×
09 71 RCL
10 00 0
11 45 yx
12 71 RCL
13 00 0
14 55 ÷
15 71 RCL
16 00 0
17 41 INV
18 44 lnx
19 65 ×
20 53 (
21 71 RCL
22 00 0
23 17 1/x
24 55 ÷
25 01 1
26 02 2
27 85 +
28 01 1
29 95 =
30 22 RST