Casio PB-700
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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Casio PB-700
This poor Casio calculator almost drove me crazy. In fact, I am ashamed to admit, I was almost ready to hit it with something real hard, something I am usually very reluctant to do to my treasured machines.
Why, you ask? What brought out the vandal in me? Very simple... you see, every once in a while, for no apparent reason at all, this calculator responded with SN error to everything I typed. No apparent reason at all. I entered 10 X=1 and it accepted that program line. I entered 20 Y=2 and it was rejected.
Fortunately (for my own sanity and for the calculator's integrity) I discovered the reason just in time. You see, the big L-shaped key on the typewriter keypad and the key labelled ENTER on the numeric keypad do not have identical functionality. The numeric keypad's ENTER key is used to execute a line in calculator mode. For instance, typing 2*2 ENTER yields 4 on the display; but if you use the large key on the typewriter keyboard, the *2 part will be entered as BASIC line 2 in program memory.
I suspect that this was Casio's way of dealing with the lack of a MODE key which, on other Casio machines, switches between RUN and WRT modes...
The PB-700's programming model is similar to that of other Casio BASIC calculators, as demonstrated here by my favorite example, the Gamma function:
10 INPUT X 20 G=1 30 IF X>5 THEN 70 40 G=G*X 50 X=X+1 60 GOTO 30 70 G=X*LOGX-X+LOG(SQR(2*PI/X)/G) 80 G=G+((((1/99/X/X-1/140)/X/X+1/105)/X/X-1/30)/X/X+1)/12/X 90 PRINT G,EXPG