MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A Johnson counter is a modified ring counter in which the output from the last flip flop is inverted and fed back as an input to the first. It is also called as Inverse Feedback Counter or Twisted Ring Counter.

Detailed explanation-2: -A twisted ring counter, also called switch-tail ring counter, walking ring counter, Johnson counter, or Möbius counter, connects the complement of the output of the last shift register to the input of the first register and circulates a stream of ones followed by zeros around the ring.

Detailed explanation-3: -Definition: A ring counter is also known as SISO (serial in serial out) shift register counter, where the output of the flip flop is connected to the input of the flip flop which acts as a ring counter.

Detailed explanation-4: -The Johnson counter is similar to the Ring counter. The only difference between the Johnson counter and the ring counter is that the outcome of the last flip flop is passed to the first flip flop as an input. But in Johnson counter, the inverted outcome Q’ of the last flip flop is passed as an input.

Detailed explanation-5: -The Johnson counter is also referred to as the Creeping counter.