Radio Shack EC-4026
| 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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Radio Shack EC-4026
Radio Shack's OEM version of the Casio fx-4500P, the EC-4026 is a decent multifunction scientific calculator with a comprehensive programming model.
This programming model is well demonstrated by the following program I wrote for the fx-4500P, calculating the logarithm of the Gamma function to a high degree of precision::
F1 L1 X=Ans F1 L2 Z=Abs X F1 L3 G=2.506628275+6.3E-10+(225.5255846+1.9E-8)/Z- (268.2959738+4.1E-8)/(Z+1)+(80.90308069+3.5E-9)/(Z+2)- (5.007578639+7.1E-10)/(Z+3) F1 L4 G=ln (G+1.146848954E-2+5.4E-12)/(Z+4))+(Z-.5)ln (Z+4.65)-Z-4.65 F1 L5 X>0⇒Goto 1. F1 L6 G=ln (-π/Z/sin πZ)-G F1 L7 Lbl 1 F1 L8 G
