Method of manipulating a calculation and device used therewith

Details Method of manipulating a calculation and device used therewith Method of manipulating a calculation and device used therewith

1986-03-31

1987-07-14

Fuller, Benjamin R.

Registers

Keyboards

Auxiliary

235 1D, G06C 702

Patent

active

046804552

ABSTRACT:
A method of manipulating a calculator comprises steps of selecting a desired instruction card, associating/attaching the instruction card to the calculator, and manipulating the special function keys according to the instructions. A set of auxiliary cards, having manipulation instructions, formula/equations, and manipulation principles printed thereon, can be attached to the calculator for achieving the method of manipulation.

REFERENCES:
patent: 4095274 (1978-06-01), Gordon
patent: 4113980 (1978-09-01), Bell
patent: 4119839 (1978-10-01), Beckmann et al.
patent: 4320838 (1982-03-01), Braver

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