Consider the sequential circuit in the following figure with four 4-bitregisters (made of rising edge sensitive D flip-flops):The initial values in the registers are the following integers:Register A = 8Register B = 4Register C = 1Register D = 5What are the values of the register B after 7 raising edges in the clock?

The content of an 8-bit register is 01011010. The register is shifted ten times to the rightwith the serial input being 1100111010 (i.e. 1 is shifted in first etc.). What is the content ofthe register after each shift?

How many flip-flops are required to build a 4-bit binary counter?a. 1b. 2c. 4

The bit sequence 10011100 is serially entered (right-most bit first) into an 8-bit parallel out shift register that is initially clear. What are the Q outputs after four clock pulses?a.10011100b.00001100c.11000000d.11110000

A 4 bit binary counter has reached the state 1001. What is the output after a further 7 clock cycles in binary. Answer with just 4 characters (eg 1010)

Observe the sequential circuit in Fig. 1. Which of the following is a possible correct waveform of the output? All used D flip-flops are positive edge triggered, Q0 is initially PRESET and Q1 CLEARED.