Mode selection circuit

Details Mode selection circuit Mode selection circuit

1988-08-24

1989-07-11

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

34082506, H04Q 100

Patent

active

048476161

ABSTRACT:
A mode selection circuit for supplying a mode selection signal and a reset signal to an apparatus having a plurality of operating modes each time an operating mode is selected includes a mode switch to which the operating mode is manually set, a mode register for outputting data representing the operating mode designated by a software command, a first AND gate for receiving outputs from the mode switch and the mode register and supplying an output to the apparatus as the mode selection signal, a first reset signal generator for generating a first reset signal in accordance with one of a power switch and a reset switch, a second reset signal generator for generating a second reset signal designated by the software command, and a second AND gate for selecting one of the first and second reset signals and outputting the selected signal to the apparatus as the reset signal.

REFERENCES:
patent: 3823550 (1974-07-01), Bergey
patent: 4028878 (1977-06-01), Droz et al.
patent: 4030284 (1977-06-01), Portmann
patent: 4198579 (1980-04-01), Ebihara et al.
patent: 4349076 (1982-09-01), Oldendorf et al.
patent: 4376993 (1983-03-01), Freeman
patent: 4417155 (1983-11-01), Aizawa

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