Log in-out system for logic apparatus

Details Log in-out system for logic apparatus Log in-out system for logic apparatus

1977-09-23

1979-03-20

Nusbaum, Mark E.

Boots, shoes, and leggings

307208, 307303, 324 73R, G01R 1500, G11C 700, G11C 1700

Patent

active

041457498

ABSTRACT:
A plurality of logic circuits having log in-out functions are connected in sequence. A clock distribution circuit is connected to each sequential logic circuit via a corresponding one of a plurality of bidirectional lines. A mode designation signal is supplied in common to each sequential logic circuit and the clock distribution circuit. A sequential logic circuit selection signal, which selects one of the sequential logic circuits, is supplied to the clock distribution circuit. A clock signal is supplied from the clock distribution circuit to each sequential logic circuit via the bidirectional lines in the clock mode. Log in data is supplied from the clock distribution circuit to the sequential logic circuit via a specific bidirectional line in accordance with the sequential logic circuit selection signal in the log in mode. Log out data is supplied to the clock distribution circuit from the sequential logic circuit in the log out mode via a specific bidirectional line in accordance with the sequential logic circuit selection signal.

REFERENCES:
patent: 3855580 (1974-12-01), Lighthall et al.
patent: 3893033 (1975-07-01), Finch
patent: 3903433 (1975-09-01), Leuschner
patent: 3919695 (1975-11-01), Gooding
patent: 3924144 (1975-12-01), Hadamard
patent: 3932841 (1976-01-01), Deerfield et al.

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