Abstract: In this paper, a new method of synchronous sequential circuit desigh
is presented on the basis of studying an automatic operation problem. in
incompletely specified synchronous sequentil circuits, The method is suita-
ble_not only for the incompletely specified Synchronous sepuential circu-
its,The characteristics of this method lie in its visualization, simplicity
and convenience, and in its. being easier to find the simplest logical futlc-
lion of automatic operation,

Key words: digital circuit, time sequence coutrol circuit, .redundancystates