Electronic pulse counter for simultaneous downward and upward co

Details Electronic pulse counter for simultaneous downward and upward co Electronic pulse counter for simultaneous downward and upward co

1989-01-30

1990-09-04

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Using shift register

377 33, 377 45, 377 56, H03K 2112, H03K 2386

Patent

active

049550411

ABSTRACT:
An electronic pulse counter includes a given number of shift registers each having a different number of memory elements, an input, an output and a clocking line. Each of the shift registers is countercoupled by a negation between the input and the output thereof. A pulse counter input is formed by interconnection of the clocking lines of all of the shift registers. Pulse counter outputs are formed by the outputs of the shift registers.

REFERENCES:
patent: 3174106 (1965-03-01), Urban
patent: 3411094 (1968-11-01), Martinek
patent: 3571573 (1971-03-01), Ott
patent: 3609311 (1971-09-01), Wayne
patent: 3681574 (1972-08-01), Caulkin
patent: 3987429 (1976-10-01), Manduley et al.
patent: 4250401 (1981-02-01), Sumida
IBM Technical Disclosure Bulletin, vol. 27, No. 1a, Jun. 1984, pp. 181-182, New York, U.S.; G. E. Hack: "Universal Counter Function Utilizing a Shift Regtister Latch String"; FIGS. 1-3; pp. 181-182 are pertinent.
Electronic Design, vol. 17, No. 13, Jun. 21, 1969, pp. 87-88, Rochelle Park, U.S.; G. V. Butler: "Build Versatile Counters with D-Type Flip-Flops"; FIG. 1; Column 2, Lines 1-16 are pertinent.
German Brochure: Tietze-Schenk, "Halbleiter-Schaltungstechnik", Springer-Verlag, Auflage 1980, pp. 494-501; p. 494 ff is pertinent.

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