Key-operated program calculator

Details Key-operated program calculator Key-operated program calculator

1977-06-24

1979-10-23

Kilgore, Robert M.

Boots, shoes, and leggings

35 48B, 235379, 364400, 340366R, G06F 1530, G09B 702, G06K 1520

Patent

active

041722850

ABSTRACT:
A key-operated digital program calculator is adapted to receive in succession a plurality of different kinds of input data items and perform a specified program calculation thereupon. The calculator is further provided with a display capable of visually displaying which kinds of input data items to be entered thereinto, whereby the operator is visually informed of the kinds of input data items to be next introduced into the calculator.

REFERENCES:
patent: 3573442 (1971-04-01), Andeen
patent: 3783257 (1974-01-01), Friedman
patent: 3836690 (1974-09-01), Purtle
patent: 3845277 (1974-10-01), Voss
patent: 3860795 (1975-01-01), Morrill
patent: 3967098 (1976-06-01), Harnagel
patent: 3973237 (1976-08-01), Sawaguchi

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