Toshiba IHC-8000
| 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/log 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: Li-ion rechargeable battery Lreg: Linear regression (2-var. stats) mA: Milliamperes of current Mtrx: Matrix support NiCd: Nickel-Cadmium recharg. batt. NiMH: Nickel-metal-hydrite rech. batt. Prnt: Printer RTC: Real-time clock Sdev: Standard deviation (1-var. stats) 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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Toshiba IHC-8000
A handheld computer, the IHC-8000 was Toshiba's entry into that once promising market of HHCs, or Hand Held Computers. On its bezel, the IHC-8000 is proudly described as an "intelligent hand-held computer", and it is indeed more intelligent than most HHCs of its era: for one thing, it has a decent BASIC interpreter built-in. For another, it does not use those dreaded NiCd internal batteries that make so little sense for a low-power CMOS device. Three AA batteries, that's the way to go!
My programming example for the IHC-8000 is yet another implementation of the Gamma function, this time using Stirling's formula:
10 INPUT Z 20 S=SGN(Z) 30 X=ABS(Z) 40 G=1 50 IF X>5 THEN 90 60 G=G*X 70 X=X+1 80 GOTO 50 90 G=X*LN(X)-X+LN(2*PI/X)/2-LN(G) 100 G=G+((((1/99/X/X-1/140)/X/X+1/105)/X/X-1/30)/X/X+1)/X/12 110 IF S>0 THEN 140 120 MODE RAD 130 G=LN(-PI/Z/SIN(PI*Z))-G 140 PRINT G,EXP(G),
