Casio FC-1000

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: 1988  Display type: Graphical display  
New price:   Display color: Black  
    Display technology: Liquid crystal display 
Size: 5"×6"×½" Display size: 96×64 pixels
Weight: 4 oz    
    Entry method: Formula entry 
Batteries: 3×"CR-2025" Lithium Advanced functions: Exp Lreg Grph Fin Cmem 
External power:   Memory functions:  
    Programming model: Formula programming 
Precision: 13 digits Program functions: Jump Cond Subr Lbl  
Memories: 26 numbers Program display: Formula display  
Program memory: 2470 program steps Program editing: Formula entry  
Chipset:   Forensic result:  

fc1000.jpg (45517 bytes)Next to everybody's favorite financial calculator, the HP-12C, the FC-1000 must be one of the best business/financial calculators around. It is also one of the very few with true programmability, not to mention graphics.

Sadly, Casio's formula programming language has been slightly gutted for this model. Presumably to make room for the financial functions, essential capability such as trigonometric functions have been removed, as were functions that allowed graphics manipulation from within a program.

Even with these limitations, the FC-1000 nevertheless represents s pleasant package. Very small and compact when closed, sturdy even when open, it has a touch keyboard that works reliably.

Graphing a user-defined function is out of the question, so I cannot plot my favorite programming example, the Gamma function, using this calculator. However, I was able to provide a very accurate implementation of this function. All the more useful as the Gamma function forms the basis of many statistical computations, so a reliable implementation must be of value on a calculator aimed at the business/financial market:

Lbl 1
X>=0⇒Goto 2
Goto 1
Lbl 2