Interface circuit for programmed controller

Details Interface circuit for programmed controller Interface circuit for programmed controller

1984-06-21

1987-11-10

Shaw, Gareth D.

Boots, shoes, and leggings

364200, G06F 300

Patent

active

047062142

ABSTRACT:
An interface circuit for a programmed controller disposed between the CPU of the programmed controller and an input/output unit includes eight N.times. 1-bit RAMs with simultaneous operating switching circuits for accessing the RAMs in parallel by the input/output unit and with sequential operating selecting circuits for accessing the RAMs serially by the CPU, whereby the interfacing process is sped up.

REFERENCES:
patent: 3815099 (1974-06-01), Cohen et al.
patent: 4150364 (1979-04-01), Baltzer
patent: 4170038 (1979-10-01), Bouvier et al.
patent: 4218740 (1980-08-01), Bennett et al.
patent: 4388683 (1983-06-01), Beifuss et al.
patent: 4417320 (1983-11-01), Ei

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