Programmable array combinatorial (PAC) circuitry

Details Programmable array combinatorial (PAC) circuitry Programmable array combinatorial (PAC) circuitry

1984-05-30

1986-09-02

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307469, 307471, 307579, H03K 19173

Patent

active

046098380

ABSTRACT:
A plurality of product terms from an array of signals are combined by programmable array combinatorial (PAC) circuitry thereby permitting a variety of logic functions on the product terms. The PAC circuitry includes logic means for receiving first and second product terms and providing an output signal representing the first input, an OR function of the first and second inputs, or an exclusive OR function of the first and second inputs. The PAC circuitry can further include a shift register for providing a clock output signal. Inverter circuitry can be provided which responds to the control signals for inverting the output signal. The PAC circuitry is simple and readily implemented in a semiconductor integrated circuit thereby providing cost efficiency.

REFERENCES:
patent: 4233524 (1980-11-01), Burdick
patent: 4399377 (1983-08-01), Jones
patent: 4541067 (1985-09-01), Whitaker
Mead & Conway, Introduction to VLSI Systems, Addison-Wesley Pub. Co., Reading, Mass., Oct. 1980, pp. 150-156.

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