Answer to Question #250226 in C for bharath

Question

Problem 1: Illustrate the operation of 4 bit Ring and Johnson counter (switch tail ring counter) Problem 2: Illustrate the operation of SIPO and PIPO Shift Registers
Problem 3: The contents of a serial-in/serial-out shift register are DCBA = 1101, where A is the least significant digit of the register. A serial input 10010 is moved into the shift register, from left to right, most significant bit first, by five successive clock pulses. Show the contents of the register after each clock pulse during the period of five clock pulses.
Problem 4: Convert JK flip flop to T FF and SR FF to D FF

Answer 1

The ring counter is a cascaded connection of flip flops, in which the output of last flip flop is connected to input of first flip flop. In ring counter if the output of any stage is 1, then its reminder is 0. The Ring counters transfers the same output throughout the circuit.

That means if the output of the first flip flop is 1, then this is transferred to its next stage i.e. 2nd flip flop. By transferring the output to its next stage, the output of first flip flop becomes 0. And this process continues for all the stages of a ring counter. If we use n flip flops in the ring counter, the ‘1’ is circulated for every n clock cycles.