Microprocessor control circuit

Details Microprocessor control circuit Microprocessor control circuit

1980-12-29

1983-10-25

Heckler, Thomas M.

Boots, shoes, and leggings

179 18ES, G06F 700, H04M 300

Patent

active

044122829

ABSTRACT:
A control circuit, for use in a telephone switching system, which monitors, controls and transfers data to and from memory, input-output devices and external circuits. A microprocessor operates under control of read-only and random-access memories. It communicates with the external telephone system via bus transceivers and a programmable interrupt controller. The integrity of this circuit is monitored by high reliability data and address parity circuits.

REFERENCES:
patent: 4032721 (1977-06-01), Anizan
patent: 4229624 (1980-10-01), Hagen et al.

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