Registers – Calculators – Input-output calculator to indicator – printer – etc.
Patent
1975-03-13
1977-02-08
Cook, Daryl W.
Registers
Calculators
Input-output calculator to indicator, printer, etc.
235 6112R, G06K 1500, G06K 2104
Patent
active
040073548
ABSTRACT:
A calculator has a mechanical drive means that responds to prerecorded instructions on a medium. The medium, such as an apertured card, is driven incrementally to consecutive stop positions. At each stop position, a program prompt is visually presented to the operator that defines the variable or numerical value to be entered by means of the keyboard. Upon entry, the card is physically moved to the next stop position that contains the next prompt and this is repeated until all variables in a particular program have been entered. In the physical space on the medium following every operator prompt is a series of coded machine instructions that perform the actual calculations on the variables entered by the operator. Following the entry of the last variable, the calculation is completed and the results are presented on the final stop position of the medium.
REFERENCES:
patent: 2346250 (1944-04-01), Bryce
patent: 3127504 (1964-03-01), Arnold
patent: 3284929 (1966-11-01), Azure, Jr.
patent: 3476917 (1969-11-01), Trebotich et al.
patent: 3619569 (1971-11-01), Hoehn
patent: 3643348 (1972-02-01), Azure, Jr.
patent: 3737628 (1973-06-01), Azure, Jr.
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