Interface circuit for data processing system

Details Interface circuit for data processing system Interface circuit for data processing system

1987-01-28

1988-03-29

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307453, 307475, 307481, H03K 329, H03K 1716, H03K 19096, H03K 19092

Patent

active

047345926

ABSTRACT:
A data processing system which has an interface circuit that interfaces the data processing system to input devices. The interface includes an input means such as a pad for conducting signal levels from the interface devices to the data processing system. A digitizer, such as a Schmitt trigger, digitizes the signal levels to signal levels that are acceptable by the data processing system. An output line conditioner conditions the data lines that are connected to the digitizers to prevent overdriving of the data lines by the digitizers. Line drivers are used for driving the digitized system on the data lines throughout the data processing system.

REFERENCES:
patent: 4398270 (1983-08-01), Taylor
patent: 4437025 (1984-03-01), Liu et al.
patent: 4461963 (1984-07-01), Koomen
patent: 4472647 (1984-09-01), Allgood et al.

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