Citizen SRP-40
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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Citizen SRP-40
Considering that it wasn't too long ago that I discovered my first programmable Citizen calculator, the fact that I am writing the page for the fourth one already is a bit of a surprise. This particular machine appears to be a Sharp OEM model that has been marketed under several brand labels, including Tandy/Radio Shack, Privileg, and others.
Here's a Gamma function program:
+ 1 = X->M yx MR ÷ MR ex × ( 2 × π ÷ MR ) √ × ( 1 2 1/x ÷ MR ) ex =