A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word. A. light, eight, clock B. right, eight, clock C. bits, one, register D. bits, one, clock E. None of the above

Serial loading means storing a word in a shift register by entering one bit per clock pulse. The first bit is entered on the first clock pulse, the second bit is entered on the second clock pulse, and so on. The word is stored in the register when the last bit is entered.

Parallel or broadside loading means storing a word in a shift register by entering all of the bits at once. This is done by connecting the data lines from the input word to the registers in the shift register. The word is stored in the register when all of the bits have been entered.

In the question, the word “bits” refers to the individual binary digits that are stored in the shift register. The word “register” refers to the individual memory cells in the shift register. The word “clock” refers to the signal that controls the shifting of the bits in the shift register.

The other options are incorrect because they do not correctly describe the operation of a shift register.