Multiple choice

The clock signal used in a sequential logic circuit is

  1. to tell the time of the day

  2. to tell how much time has elapsed since the system was turned on

  3. to carry serial data signals

  4. to synchronize events in various parts of a screen
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D Correct answer
Explanation

The clock signal in sequential logic circuits provides timing synchronization to coordinate state changes across different parts of the circuit. While 'screen' is oddly specific (typically would say 'circuit' or 'system'), this refers to display timing signals in display controllers.

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