Classical

Digital Logic - Sequential Circuits

41:   In a ripple counter using edge triggered JK flfp-flops, the pulse input is applied to the
A. clock input of all flip-flops
B. clock input of one flip-flops
C. J and K inputs of all flip-flops
D. J and K inputs of one flip-flop
 
 

Option: D

Explanation :

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42:   The number of clock pulses needed to shift one byte of data from input to the output of a 4-bit shift register is
A. 10
B. 12
C. 16
D. 32
 
 

Option: C

Explanation :

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43:   The main difference between JK and RS flip-flop is that
A. JK flip flop needs a clock pulse
B. There is a feedback in JK lip-lop
C. JK flip-flop accepts both inputs as 1
D. JK flip-flop is acronym of Junction cathode multivibrator
 
 

Option: C

Explanation :

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44:   Which of the following unit will choose to transform decimal number to binary code ?
A. Encoder
B. Decoder
C. Multiplexer
D. Counter
 
 

Option: A

Explanation :

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45:   The flip-flops which operate in synchronism with external clock pulses are known as
A. Synchronous flip-flop
B. Asynchronous flip-flop
C. Either of the above
D. None of these
 
 

Option: A

Explanation :

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