A 4-bit shift register that receives 4 bits of parallel data will shift to the _

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Question
A 4-bit shift register that receives 4 bits of parallel data will shift to the ________ by ________ position(s) for each clock pulse.
Options
A. right, one
B. right, two
C. left, one
D. left, three

Correct Answer

right, one

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2. On the fifth clock pulse, a 4-bit Johnson sequence is Q₀ = 0, Q₁ = 1, Q₂ = 1, and Q₃ = 1. On the sixth clock pulse, the sequence is ________.
Options
A. Q₀ = 1, Q₁ = 0, Q₂ = 0, Q₃ = 0
B. Q₀ = 1, Q₁ = 1, Q₂ = 1, Q₃ = 0
C. Q₀ = 0, Q₁ = 0, Q₂ = 1, Q₃ = 1
D. Q₀ = 0, Q₁ = 0, Q₂ = 0, Q₃ = 1

4. How is a strobe signal used when serially loading a shift register?
Options
A. to turn the register on and off
B. to control the number of clocks
C. to determine which output Qs are used
D. to determine the FFs that will be used

6. By adding recirculating lines to a 4-bit parallel-in, serial-out shift register, it becomes a ________, ________, and ________-out register.
Options
A. parallel-in, serial, parallel
B. serial-in, parallel, serial
C. series-parallel-in, series, parallel
D. bidirectional in, parallel, series

7. What is the function of a buffer circuit?
Options
A. to provide an output that is inverted from that on the input
B. to provide an output that is equal to its input
C. to clean up the input
D. to clean up the output

9. What is the difference between a ring shift counter and a Johnson shift counter?
Options
A. There is no difference.
B. A ring is faster.
C. The feedback is reversed.
D. The Johnson is faster.

10. To serially shift a nibble (four bits) of data into a shift register, there must be ________.
Options
A. one clock pulse
B. four clock pulses
C. eight clock pulses
D. one clock pulse for each 1 in the data

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