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The  flip – flop that cannot be used to construct a serial shift register is_____

Question

The flip – flop that cannot be used to construct a serial shift register is_____

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Solution

The flip-flop that cannot be used to construct a serial shift register is the Toggle or T flip-flop.

Here's why:

  1. A serial shift register is a sequence of flip flops sharing the same clock, in which the output of one flip-flop is connected to the 'data' input of the next flip-flop.

  2. The most commonly used flip-flops in a shift register are the D (Data) and JK flip-flops because they have a clear distinction between the 'data' and 'control' inputs.

  3. The T (Toggle) flip-flop, however, does not have a separate 'data' input. It only has a 'control' input (the T input). When the T input is '1', the flip-flop toggles its output. But when the T input is '0', the output remains the same.

  4. Therefore, because the T flip-flop lacks a separate 'data' input, it cannot be used to construct a serial shift register.

This problem has been solved

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