Digital Electronics - Counters

Exercise :: Counters - General Questions

79. 

MOD-6 and MOD-12 counters and multiples are most commonly used as:

A. frequency counters
B. multiplexed displays
C. digital clocks
D. power consumption meters

Answer: Option C

Explanation:

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80. 

Which of the following is an invalid state in an 8421 BCD counter?

A. 0011
B. 1001
C. 1000
D. 1100

Answer: Option D

Explanation:

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81. 

After 10 clock cycles, and assuming that the DATA input had returned to 0 following the storage sequence, what values would be stored in Q4, Q3, Q2, Q1, Q0 of the register in Figure 7-5?

A. 0,1,0,1,1
B. 1,1,0,1,0
C. 1,0,1,0,1
D. 0,0,0,0,0

Answer: Option D

Explanation:

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82. 

How many different states does a 2-bit asynchronous counter have?

A. 1
B. 2
C. 4
D. 8

Answer: Option C

Explanation:

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83. 

A 12 MHz clock frequency is applied to a cascaded counter containing a modulus-5 counter, a modulus-8 counter, and a modulus-10 counter. The lowest output frequency possible is ________.

A. 10 kHz
B. 20 kHz
C. 30 kHz
D. 60 kHz

Answer: Option C

Explanation:

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