HP 20S lommeregnere i uåbnede kasser

Hewlett Packard 20S med de gode taster. HP skriver på kassen om lommeregneren: Algebraic entry using [=] key All the essential math and trig functions Decimal, hexadecimal, octal, and binary bases Keystroke programming Built-in program library including: root finder, Simpson's Rule integration, complex number operations, 3×3 matrix operations, quadratic formula, and curve fitting Hewlett-Packard stands behind its products with technical support, a limited one-year warranty, and international service centers. In this box: HP 20S, Owner's Manual, batteries, case. Dansk vejledning indlagt. Der er i alt 4, som stammer fra, at der blev købt for mange i slut-90’erne. Pris 600 kr. pr. stk.