Casio FX-880P

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
Years of production: 1990  Display type: Alphanumeric display  
New price:   Display color: Black  
    Display technology: Liquid crystal display 
Size: 3½"×7"×½" Display size: 2×32 characters
Weight: 8 oz    
    Entry method: BASIC expressions 
Batteries: 2×"CR-2032" Lithium + 1×"CR-1220" Lithium Advanced functions: Trig Exp Hyp Lreg Solv Intg Cplx Cmem Snd Mtrx BaseN Eqlib 
External power:   Memory functions:  
I/O: Casio I/O, expansion port     
    Programming model: BASIC 
Precision: 12 digits Program functions: Jump Cond Subr Lbl Ind  
Memories: 32(0) kilobytes Program display: Text display  
Program memory: 32 kilobytes Program editing: Text editor  
Chipset:   Forensic result: 9.000007164  

Casio FX-880P

fx880p.jpg (39595 bytes)The fx-880P is the de luxe version of Casio's FX-850P, a comprehensive BASIC-programmable handheld calculator. The difference: the fx-880P comes with a whopping 32 kB RAM built in. Otherwise the two machines are identical.

The programming model of the fx-880P is demonstrated by the following example, computing the logarithm of the Gamma function: 

10 INPUT X
20 G=1
30 IFX>5GOTO70
40 G=G*X
50 X=X+1
60 GOTO 30
70 S=1/1188/X/X-1/1680
80 S=S/X/X+1/1260
90 S=S/X/X-1/360
100 S=S/X/X+1/12
110 G=X*LNX-X+LN(2*PI/X/G/G)/2+S/X
120 PRINT G;EXPG