Refer to Figure 5-47, where a three-bit number stored in register X is serially shifted into register Y. How can the circuit be modified so that, at the end of the transfer operation, the original number stored in X is present in both registers?

Figure 5-47 

Transcribed Image Text:

D X₂ Shift pulses 0 CLK X₂ X₁ 0 0 0 X register D 8 Xo O 000 X₁ CLK Y₂ 1 0 0 O D Y₁ 0 1 0 Xo CLK Yo 0 (a) 0 (b) D Y₂ CLK Y register D Y₁ CLK Before pulses applied After first pulse After second pulse After third pulse D Yo CLK