

Shift Registers - Technical MCQs
Q1: What is the difference between a ring shift counter and a Johnson shift counter?A There is no difference.
B A ring is faster.
C The feedback is reversed.
D The Johnson is faster.
ANS:C - The feedback is reversed. A ring counter is a shift register (a cascade connection of flip-flops) with the output of the last one connected to the input of the first, that is, in a ring. Typically a pattern consisting of a single 1 bit is circulated, so the state repeats every N clock cycles if N flip-flops are used. It can be used as a cycle counter of N states. |


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