Shift Registers MCQs

Question 1

What is the function of a buffer circuit?

Accepted Answer

to provide an output that is equal to its input

Answer

to provide an output that is inverted from that on the input

Answer

to clean up the input

Answer

to clean up the output

Question 2

What is the preset condition for a ring shift counter?

Accepted Answer

a single 1, the rest 0

Answer

all FFs set to 1

Answer

all FFs cleared to 0

Answer

a single 0, the rest 1

Question 3

Which is not characteristic of a shift register?

Accepted Answer

Serial in/parallel in

Answer

Serial in/parallel out

Answer

Parallel in/serial out

Answer

Parallel in/parallel out

Question 4

To keep output data accurate, 4-bit series-in, parallel-out shift registers employ a ________.

Accepted Answer

strobe line

Answer

divide-by-4 clock pulse

Answer

sequence generator

Answer

multiplexer

Question 5

With a 50 kHz clock frequency, six bits can be serially entered into a shift register in ________.

Accepted Answer

120 s

Answer

12 s

Answer

12 ms

Answer

120 ms

Question 6

Another way to connect devices to a shared data bus is to use a ________.

Accepted Answer

transceiver

Answer

circulating gate

Answer

bidirectional encoder

Answer

strobed latch

Question 7

To serially shift a nibble (four bits) of data into a shift register, there must be ________.

Accepted Answer

four clock pulses

Answer

one clock pulse

Answer

eight clock pulses

Answer

one clock pulse for each 1 in the data

Question 8

Computers operate on data internally in a ________ format.

Accepted Answer

parallel

Answer

tristate

Answer

universal

Answer

serial

Question 9

In a 4-bit Johnson counter sequence there are a total of how many states, or bit patterns?

Accepted Answer

8

Answer

1

Answer

2

Answer

4