Ncr Corporation

James E Barnhart

Richard A Daniel

Stuart C Rowson

Woonsuk Paek

A computer system clock generator generates several system clock signals which are in a tuned state at desired locations, thereby offsetting the effects of varying propagation delays among the system clock signals. A shift register ring has one of its taps selectively connected to its data input so that a series of logic high level and logic low level data is advanced through the shifting stages. A tap selector for each desired output signal logically combines the signals output from the appropriate taps to produce output clock signals having desired leading and trailing edges.

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St. Peters, MO, United States of America

James E Barnhart