Canon F-802P

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
Years of production:   Display type: Numeric display  
New price:   Display color: Black  
    Display technology: Liquid crystal display 
Size: 5½"×3"×½" Display size: 10+2 digits
Weight: 4 oz    
    Entry method: Algebraic with precedence 
Batteries: 2×"LR44" button cell Advanced functions: Trig Exp Hyp Lreg Ab/c Cplx Cmem BaseN Units Const 
External power:   Memory functions: +/-/×/÷/^ 
    Programming model: Partially merged keystroke 
Precision: 12 digits Program functions: Jump Cond  
Memories: 10 numbers Program display:  
Program memory: 128 program steps Program editing:  
Chipset:   Forensic result: 8.99999863704  

f-802p.jpg (21570 bytes)The F-802P is a multifunction programmable calculator that's functionally equivalent to the Canon F-800P; the only difference is the form factor.

The F-802P can be characterized as a fairly high-end, "do everything" scientific model. In addition to the typical compliment of scientific functions, it also offers two-variable statistics, unit conversions, a constants library, probability functions, and last but not least, a programming model that corrects many of the shortcomings of earlier, similar models.

With 128 partially merged programming steps, even complex algorithms can be easily implemented. If only this beast offered a means to view/edit programs! As things are, if you make a mistake, you have no choice but to reenter your entire program again. This also makes experimentation difficult; your best bet is to use pencil and paper first, while you work on your algorithm.

This machine's programming model is best illustrated by a program I originally wrote for the Citizen SRP-80, which computes the value of the incomplete Gamma function. With the integration limit stored in register 0, and an argument in the display register, you can invoke this program by RUN 6. A large enough integration limit will let you compute the Gamma function itself accurately:

01:  STO
02:  2
03:  RCL
04:  0
05:  STO
06:  1
07:  ax
08:  RCL
09:  2
10:  ÷
11:  RCL
12:  1
13:  ex
14:  ÷
15:  RCL
16:  2
17:  =
18:  STO
19:  3
20:  STO
21:  0
22:  1
23:  STO
24:  +
25:  2
26:  RCL
27:  1
28:  GOTO 1
29:  GOTO -9
30:  ÷
31:  RCL
32:  2
33:  ×
34:  RCL
35:  3
36:  GOTO 1
37:  GOTO -8
38:  +
39:  STO
40:  3
41:  RCL
42:  0
43:  =
44:  x<=M 1
45:  GOTO -8
46:  RCL
47:  1
48:  x<->Mo