Bipolar logic having graded power

Details Bipolar logic having graded power Bipolar logic having graded power

1974-02-19

1976-10-12

Wojciechowicz, Edward J.

357 35, 357 36, 357 43, 357 44, 357 45, 357 48, H01L 2702, H01L 2972, H01L 2710, H01L 2704

Patent

active

039861996

ABSTRACT:
An electronic timekeeping system is implemented in bipolar integrated circuit technology for displaying time by way of a digital display. The bipolar circuitry is implemented utilizing integrated injection logic and the countdown chain utilizes flip-flops having geometries configured to effect power grading. That is, the emitter geometry of the PNP injector is selectively varied so as to vary the injection base drive current.

REFERENCES:
patent: 3676713 (1972-07-01), Wiedmann
patent: 3702955 (1972-11-01), Kalb et al.

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