MCI SLC-604
| 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 |
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MCI SLC-604
A programmable calculator, the MCI SLC-604 is another OEM brand machine using that ever popular Sharp LI3301A integrated circuit.
These machines are multifunction scientific calculators in a pleasant, small package; my only complaint is that their programming model is needlessly primitive. Too few program steps, no program editing, no branching, and on top of that, the annoying "feature" of zeroing out the X-register when program entry is started make for a frustrating experience when you try to enter anything but the simplest of algorithms.
Becuase of these limitations, my favorite programming example, the Gamma function, cannot be implemented to a high degree of precision. Only approximations are possible, such as this one based on Stirling's formula:
x-M 1 M+ ÷ MR ÷ 1 2 - 3 6 0 1/x / MR / MR x^2 + 1 = × MR xy MR ÷ MR ex × ( 2 × π ÷ MR ) √ =