Segment scanning method for calculator display system

Details Segment scanning method for calculator display system Segment scanning method for calculator display system

1975-04-07

1977-03-22

Curtis, Marshall M.

Communications: electrical

Systems

With specific power supply

340166EL, 340324M, G09F 932

Patent

active

040140121

ABSTRACT:
A method for displaying characters using a segment scanning technique, as for an electronic calculator of the type employing segmented visible light emitting diodes. The segments are scanned in a regular sequence while the digits are selectively actuated in a code corresponding to the data to be displayed. A representation of each segment to be displayed is compared with each of the digits in a data memory, and a display signal is generated if the digit contains each segment. These display signals are used to control the selective actuation of the digits.

REFERENCES:
patent: 3911424 (1975-10-01), Giannuzzi et al.
patent: 3918041 (1975-11-01), Mao

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