1. (i) What is a shift register? (ii) Draw a 4-bit shift register with parallel load. (iii) Briefly mention the operation of the 4-bit shift register with parallel load.

2. (i) What is the difference between a ripple counter and a synchronous counter? (ii) You are asked to design a synchronous counter that will count the sequence 0 > 2 > 7 > 0. Represent these decimal numbers in 3 bits binary numbers. (iii) Draw the state diagram of the synchronous counter. (iv) Give the state table of the synchronous counter. (v) Find the functions for the next state of the state table using K-map. (vi) Draw the synchronous counter (You need to consider D flip-flops as memory unit).