Data display system for electronic calculator or microprocessor

Details Data display system for electronic calculator or microprocessor Data display system for electronic calculator or microprocessor

1976-10-27

1978-07-11

Malzahn, David H.

Boots, shoes, and leggings

340324R, 364711, 364744, G06F 314

Patent

active

041006003

ABSTRACT:
An electronic calculator or microprocessor system of the type preferably having keyboard input and a visual display is provided with a semiconductor chip having an arithmetic unit for performing arithmetic operations on the numeric data received from the input, a memory for storing a number of instruction words addressable in response to said function commands, an instruction word decoder for decoding instruction words and for controlling the arithmetic unit in response thereto, first and second operational memories for storing numeric data received by said input or outputted from said arithmetic unit and a display system for displaying numeric data stored in a first one of the operational registers according to display codes stored in a second one of said operational registers, the display codes being indicative of which character positions in the display are to be blanked or to be provided with signals actuating a decimal point thereat.

REFERENCES:
patent: 3564503 (1971-02-01), Kubo et al.
patent: 3646544 (1972-02-01), Yamaguchi
patent: 3662346 (1972-05-01), Tada
patent: 3678471 (1972-07-01), Ragen et al.
patent: 3815098 (1974-06-01), Kimura et al.
patent: 3820107 (1974-06-01), Niizawa et al.
patent: 3919532 (1975-11-01), Cochran et al.
patent: 3932846 (1976-01-01), Brixey et al.
patent: 3962571 (1976-06-01), Brantingham

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