Problem

Design a four-bit shift register with parallel load using D flip-flops. There are two co...

Design a four-bit shift register with parallel load using D flip-flops. There are two control inputs: shift and load . When shift = 1, the content of the register is shifted by one position. New data are transferred into the register when load = 1 and shift = 0. If both control inputs are equal to 0, the content of the register does not change. (HDL—see Problem 6.35(c), (d).)

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