Sharp EL-9200C
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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Sharp EL-9200C
The EL-9200C is a recent graphical calculator from Sharp. Of all the graphical calculators I've seen so far, this one appears to have the best, most readable LCD screen. Unfortunately, its programming model is similar to that of comparable models from Casio and Texas Instruments; in other words, the wonderful functional integration that was achieved by Hewlett-Packard in their HP-48 series machines is not present here. The EL-9200C also appears to be a fairly slow machine; there's a noticeable pause after every keystroke as you enter data. Program execution, however, is comparatively fast.
Of course it was yet another implementation of the Gamma function that I used to familiarize myself with the capabilities of this machine. One oddity: regardless of the amount of memory available, the length of each individual line of program code is limited to 160 characters. Because of this, some lengthy formulae, including the one I am using here, need to be broken up into parts.
Input x y=1 Label 1 If x>0Goto 2 y=x*y x=x+1 Goto 1 Label 2 g=1+(76.18009172+9.5E-9)/(x+1)-86.50532033/(x+2)+ 24.01409824/(x+3)-1.231739572/(x+4)+ 1.208650973E-3/(x+5)-5.395239384E-6/(x+6) e^(ln (g*G√(2π)/x)+(x+.5)*ln (x+5.5)-x-5.5)/y