Electronic function calculator with improved functional command

Details Electronic function calculator with improved functional command Electronic function calculator with improved functional command

1984-05-16

1987-03-17

Malzahn, David H.

Boots, shoes, and leggings

G06F 738

Patent

active

046512942

ABSTRACT:
A portable electronic computer or calculator is characterized in that it calculates a functional operation on the previously calculated result by simply actuating a function key switch while the result is being displayed. It is unnecessary to actuate any entry key switch. In a specific form of the present invention, the computer may calculate a functional operation on numerical data in response to input of a function command, the numerical data being either newly inputted or previously calculated.

REFERENCES:
patent: 4053753 (1977-10-01), Sado et al.
patent: 4302816 (1981-11-01), Yamamoto
patent: 4473886 (1984-09-01), Rizk et al.
patent: 4495592 (1985-01-01), Caldwell et al.
patent: 4519045 (1985-05-01), Caldwell et al.

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