Casio fx-6300G

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: 1991  Display type: Graphical display  
New price:   Display color: Black  
    Display technology: Liquid crystal display 
Size: 4½"×3"×½" Display size: 40×23 pixels and 10+2 digits
Weight: 4 oz    
    Entry method: Formula entry 
Batteries: 2×"CR-2032" Lithium Advanced functions: Trig Exp Hyp Lreg Grph Ab/c Cmem BaseN 
External power:   Memory functions:  
I/O:      
    Programming model: Formula programming 
Precision: 13 digits Program functions: Jump Cond Subr Lbl Ind  
Memories: 78(26) numbers Program display: Formula display  
Program memory: 400 bytes Program editing: Formula entry  
Chipset:   Forensic result:  

Casio fx-6300G

fx6300g.jpg (24158 bytes)The fx-6300G is an older model graphical calculator by Casio. It has an interesting display consisting of multiple display areas; only part of the display is used for graphing purposes.

Although it has been discontinued, the calculator's small size and pleasant display/keyboard layout still make it a favored choice by many. Its 400-byte program memory is sufficient to store even some complex applications; the programming model provides for conditional execution, loops, and subroutines. This programming model is very similar to that used in later Casio graphical models, such as the CFX-9800G.

The program example here, another implementation of my favorite the Gamma function, demonstrates many aspects of this machine's programming model. This program leaves about half the calculator's program memory unused. 

"X=":? -> X:1 -> Y:Lbl 1:X >= 0 => Goto 2:
XY -> Y:X+1 -> X:Goto 1:Lbl 2:
e(ln ((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))×
  √(2π)/X)+(X+.5)× ln (X+5.5)-X-5.5)/Y