Casio FX-720PF
| 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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Casio FX-720PF
Why am I listing a pocket computer/calculator with zero memory? The FX-720P is a machine with no built-in memory; all its memory is in the form of removable RAM cards. Otherwise, it is a typical example of a Casio BASIC-programmable handheld calculator.
The programming model of this machine is demonstrated by the following example, which computes the logarithm of the Gamma function:
10 INPUT "X",X 20 G=1 30 S= SGNX 40 Z= ABSX 50 IF Z>9 THEN 90 60 G=G*Z 70 Z=Z+1 80 GOTO 50 90 G= LN(Z* SQR(Z*( EXP(1/Z)- EXP(-1/Z))/2+1/810/Z^6))*Z- LNG 100 G=G-Z+ LN(2*π/Z)/2 110 IF S>0 THEN 130 120 G= LN(-π/X/ SIN(π*X))-G 130 PRINT G, EXPG
