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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 |
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Once again, a calculator that doesn't belong in my collection of programmable calculators. Yet it's here, a result of another irresistible thrift store bargain.
The SR-40 is, for all practical intents and purposes, identical to one of the most popular calculators ever made, the TI-30. It's the archetype basic scientific calculator with trigonometric, exponential, and logarithmic functions, parenthesis entry, and a single memory.
The TI-30, SR-40, and variations thereof represent an enormously successful line of calculators. Just visit a supermarket or drugstore today; chances are you'll see a derivative of this basic model that, despite its more colorful appearance and the presence of a few extra functions, will be nearly identical in terms of functionality to these old models.