Shift Registers

Q1: On the third clock pulse, a 4-bit Johnson sequence is Q0 = 1, Q1 = 1, Q2 = 1, and Q3 = 0. On the fourth clock pulse, the sequence is ________.

A Q0 = 1, Q1 = 1, Q2 = 0, Q3 = 0

B Q0 = 1, Q1 = 1, Q2 = 1, Q3 = 1

C Q0 = 1, Q1 = 0, Q2 = 0, Q3 = 0

D Q0 = 0, Q1 = 0, Q2 = 0, Q3 = 0

ANS:A - Q0 = 1, Q1 = 1, Q2 = 1, Q3 = 1

0000- 0stage clock pulse.
1000-1stage.
1100
1110
1111-4th clock pulse.
0111
0011
0001
0000-8stage c'pulse.

ANS = 1111.



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