Electronic instrument having an operation count function

Details Electronic instrument having an operation count function Electronic instrument having an operation count function

1980-02-28

1982-08-31

Malzahn, David H.

Boots, shoes, and leggings

364200, 364715, 235 92CP, G06F 1300

Patent

active

043475795

ABSTRACT:
An electronic instrument having an operation count function for executing addition and subtraction. This instrument is provided with an item count register for storing the number of times of the operation of an addition instructing key or a subtraction instructing key, a total register for storing the result of the addition or the subtraction by the operation of said keys, a key for causing the content of said item count register and the content of said total register to be saved into other registers which are not used for the operation, and a key for causing said saved contents to be returned to said item count register and said total register, respectively.

REFERENCES:
patent: 3911424 (1975-10-01), Giannuzzi et al.
patent: 3983380 (1976-09-01), Sharif et al.
patent: 4041291 (1977-08-01), Pavda
patent: 4048484 (1977-09-01), Brittan
patent: 4118783 (1978-10-01), Collins
patent: 4138734 (1979-02-01), Nakata et al.
patent: 4164038 (1979-08-01), Nachtigal
patent: 4177520 (1979-12-01), Meff

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