Simple W-indicator Circuit Diagram

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This is Simple W-indicator Circuit Diagram. This circuit Two TTL ICs and a handful of other components are all that is needed for a circuit that will indicate which of four buttons was pressed first, as well as lock out all other entries A logic 0 at one of the Q outputs, lights the appropriate LED and locks out other entries by taking the clock input low. 

Simple W-indicator Circuit Diagram


Simple W-indicator Circuit Diagram

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