Q. 67 The shift register shown in figure is initially loaded with the bit pattern 1010.
Subsequently the shift register is clocked, and with each clock pulse the pattern
gets shifted by one bit position to the right. With each shift, the bit at the
serial input is pushed to the left most position (msb). After how many clock
pulses will the content of the shift register become 1010 again ? 
(A) 3
(B) 7
(C) 11
(D) 15
Answer:(B)
Explanation:
