Logic operation circuit

Communications: electrical – Continuously variable indicating – With meter reading

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340804, 364DIG1, 364DIG2, 364716, 307448, 307445, G09G 500

Patent

active

051307049

ABSTRACT:
A logic operation circuit includes an instruction signal generating circuit for generating an instruction signal which designates a bit of a predetermined n-bit code signal in accordance with a combination of a first input logical numeral and a second input logical numeral. The logic operation circuit also includes a bit selecting circuit for selecting said bit designated by the instruction signal generated by the instruction signal generating circuit and for outputting the selected bit as an output logical numeral.

REFERENCES:
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patent: 4721868 (1988-01-01), Cornell et al.
patent: 4763020 (1988-08-01), Takata et al.
patent: 4816817 (1989-03-01), Herrington
patent: 4851834 (1989-07-01), Stockebrand et al.
"Fundamentals of Logic Design" by Roth, Jr., West Publishing Company, 1979, pp. 184 to 190, and 549 to 558.
IBM Technical Disclosure Bulletin, vol. 21, No. 6, Nov. 1978, pp. 2474-2475, New York, US; F. E. Sakalay: "Programmable Boolean Function Generator".
IEEE 1983-International Symposium on Circuits and Systems, Newport Beach, Calif., May 2-4, 1983, vol. 2, pp. 509-512, IEEE, New York, US; Y. Tsai: "Pass Transistor Networks in MOS Technology".
IEEE International Solid-State Circuits Conference, vol. 28, 32nd Conference, Feb. 13, 1985, pp. 86-87, 315, IEEE, New York, US; M. Kameyama et al.: "An NMOS Pipelined Image Processor Using Quaternary Logic".
Int. J. Electronics, vol. 40, No. 5, May 1976, pp. 509-512 S. Murugesan: "Programmable Universal Logic Module".
Analog Switch Data Book, Siliconix Inc., 1976, Santa Clara, Calif., pp. 1-125.

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