(b) Neglect the stop/go control signal described above and complete the excitation table below for this counter using D flip-flops.

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You have to design a synchronous 3-bit (CBA) up/down counter that can count up through
the states (001) → (010) → (100) → (101) and recycles. The counter should contain a
direction input which forces it to count down on a LO control signal. It should also contain a
stop/go control that will freeze the counter when this signal is HI. If any unused states are
encountered, the counter should go to (001).
Transcribed Image Text:You have to design a synchronous 3-bit (CBA) up/down counter that can count up through the states (001) → (010) → (100) → (101) and recycles. The counter should contain a direction input which forces it to count down on a LO control signal. It should also contain a stop/go control that will freeze the counter when this signal is HI. If any unused states are encountered, the counter should go to (001).
(b) Neglect the stop/go control signal described above and complete the excitation table
below for this counter using D flip-flops.
Present
Next
Required
c B
D
В
A
A
Dc
DB
DA
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
| ㅇ
c|ㅇ | 0
Transcribed Image Text:(b) Neglect the stop/go control signal described above and complete the excitation table below for this counter using D flip-flops. Present Next Required c B D В A A Dc DB DA 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | ㅇ c|ㅇ | 0
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