In order to build a MOD-18 counter, the minimum number of flip flops needed is…
2007
In order to build a MOD-18 counter, the minimum number of flip flops needed is equal to
- A.
18
- B.
9
- C.
5
- D.
4
Attempted by 113 students.
Show answer & explanation
Correct answer: C
To design a MOD-M counter, n flip-flops must satisfy 2^n >= M. For MOD-18, 2^4 is 16 which is insufficient. Since 2^5 equals 32, five flip-flops are required to count up to 18 states.
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