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Logic · Sequential

4-bit Ripple Counter

A 4-bit ripple counter chains four T flip-flops where each stage Q output clocks the next. The counter increments from 0000 to 1111 (0–15) before wrapping, with propagation delay accumulating across stages.

Typ LogikgatterdiagrammStandard IEEE Std 91/91a-1991Engine schematex-logicAktualisiert 27.5.2026
4-bit Ripple Counter
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Die Anfrage

“Draw a four-bit ripple binary counter with CLK and RESET inputs and Q0 through Q3 outputs using cascaded T flip-flops.”

Dann probieren SieAdd a terminal-count output.Change it to a three-bit counter.
Was diese Zeichnung zeigt

Die dahinterstehenden Entscheidungen verstehen.

01T flip-flop (Toggle mode) changes state on every clock edge

each stage is a divide-by-2 frequency divider.

02Each stage clocked by previous Q

the ripple adds one gate delay per bit.

03

Shared RESET allows asynchronous clear of all stages simultaneously.

Replace TFF with DFF + feedback (D=NOT Q) for synchronous operation; cascade two 4-bit counters for 0-255 counting.

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