Fractional/decimal/digital converting calculator

Details Fractional/decimal/digital converting calculator Fractional/decimal/digital converting calculator

1990-10-01

1992-08-11

Mai, Tan V.

Boots, shoes, and leggings

36471008, G06F 300

Patent

active

051385660

ABSTRACT:
A Production Pal is provided that permits a user to perform calculations directly upon fractional data. Input to the Production Pal can be either a length expressed as a mixed fraction or rectangular measurements (length.times.width). The desired size, original size, and scaling factor (decimal or percent) are variables that can be manipulated. The circuit architecture employed utilizes a central processor unit, read only memory, random access memory, keyboard, and display. A fractional computation unit is a unique contribution. The keyboard contains numerous keys devoted to direct fractional keystroking. The scaling capabilities are also a unique contribution.

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patent: 4800514 (1989-01-01), Earle
patent: 4860233 (1989-08-01), Pitchford
patent: 4872112 (1989-10-01), Hungerford

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