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In a parallel in/parallel out shift register, D0 = 1, D1 = 1, D2 = 1, and D3 = 0. After three clock pulses, the data outputs are ________1110000111001000

Question

In a parallel in/parallel out shift register, D0 = 1, D1 = 1, D2 = 1, and D3 = 0. After three clock pulses, the data outputs are ________1110000111001000

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Solution

The data outputs after three clock pulses would be 0001110000111001.

Here's the step by step process:

  1. Initially, the data is D0 = 1, D1 = 1, D2 = 1, D3 = 0. So, the data is 1110.

  2. After the first clock pulse, the data shifts one place to the right. The leftmost bit (D3) is filled with the previous value of D2, and the rightmost bit (D0) is filled with the previous value of D1. So, the data becomes 0111.

  3. After the second clock pulse, the data shifts one more place to the right. Again, the leftmost bit (D3) is filled with the previous value of D2, and the rightmost bit (D0) is filled with the previous value of D1. So, the data becomes 1011.

  4. After the third clock pulse, the data shifts one more place to the right. The leftmost bit (D3) is filled with the previous value of D2, and the rightmost bit (D0) is filled with the previous value of D1. So, the data becomes 1101.

So, after three clock pulses, the data outputs are 0001110000111001.

This problem has been solved

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