Key controlled digital system having separated display periods a

Details Key controlled digital system having separated display periods a Key controlled digital system having separated display periods a

1976-06-23

1978-01-24

Curtis, Marshall M.

Communications: electrical

Systems

With specific power supply

340324M, 340336, 340365R, G09F 932

Patent

active

040706648

ABSTRACT:
In a digital system including a digital computing module which generates a repeating sequential series of first pulses and a group of second pulses simultaneously with each of first pulses for energizing a dynamic numerical display device and to which key input information is coupled as timing pulses, during a first period of a predetermined time interval the display device is driven by the first and second pulses while during a second period of the predetermined time interval the display device is not driven but the timing pulses are coupled to the computing module.

REFERENCES:
patent: 3836903 (1974-09-01), Lawrence
patent: 3848250 (1974-11-01), Kashio
patent: 3969717 (1976-07-01), Hatsukano et al.
patent: 3990070 (1976-11-01), Spence

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