l5_sync-counter.pdf - E1122 DIGITAL LOGIC(B SPRING 2018...

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E1122 DIGITAL LOGIC (B) SPRING 2018 Lecture 5 Synchronous counter
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2 Sequential Circuit Introduction to Counter Synchronous Counter Parallel Synchronous Counter Up/Down Designing Synchronous Counter Counter with Parallel Load
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3 Sequential Circuit: Counter Counters are sequential circuits which "count" through a specific state sequence. They can count up , count down , or count through other fixed sequences . Two types of counter Synchronous counter (e.g. parallel) Asynchronous counter (e.g. ripple) Ripple counter let some flip-flop output to be used as clock signal source for other flip-flop Synchronous counter use the same clock signal for all flip-flop
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