A 4-bit up/down binary counter is in the down mode and in the 1100 state currently. To what state does the counter go on the next clock pulse
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The 4-bit up / down binary counter is in down mode and is currently in state 1100. The state of the counter at the next clock pulse is 1011.
Explanation:
- The 4-bit synchronization counter counts sequentially with each clock pulse, resulting in an output counting up from 0 (0000) to 15 (1111). Therefore, this type of counter is also known as a synchronous 4-bit up counter.
- If the external input UP is 1, the circuit acts as a UP counter independently of the DOWN input, counting sequences from 0000 to 1111.
- If the external input DOWN is 1 and UP is 0, the circuit acts as a DOWN counter and counts. Sequence from 1111 to 0000.
- If both inputs UP and DOWN are equal to 0, the output of the flip-flop is unchanged.
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