Shift Registers - General Questions (2)

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Shift Registers - General Questions

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

A.	divide-by-4 clock pulse
B.	sequence generator
C.	strobe line
D.	multiplexer

Answer: Option C

Explanation:

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10.

Which is not characteristic of a shift register?

A.	Serial in/parallel in
B.	Serial in/parallel out
C.	Parallel in/serial out
D.	Parallel in/parallel out

Answer: Option A

Explanation:

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11.

What is the preset condition for a ring shift counter?

A.	all FFs set to 1
B.	all FFs cleared to 0
C.	a single 0, the rest 1
D.	a single 1, the rest 0

Answer: Option D

Explanation:

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12.

What is the function of a buffer circuit?

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

Answer: Option B

Explanation:

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13.

Which type of device may be used to interface a parallel data format with external equipment's serial format?

A.	key matrix
B.	UART
C.	memory chip
D.	series in, parallel out

Answer: Option B

Explanation:

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14.

A 74HC195 4-bit parallel access shift register can be used for ________.

A.	serial in/serial out operation
B.	serial in/parallel out operation
C.	parallel in/serial out operation
D.	all of the above

Answer: Option D

Explanation:

15.

What is a transceiver circuit?

A.	a buffer that transfers data from input to output
B.	a buffer that transfers data from output to input
C.	a buffer that can operate in both directions

Answer: Option C

Explanation:

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16.

What is the difference between a shift-right register and a shift-left register?

A.	There is no difference.
B.	the direction of the shift

Answer: Option B

Explanation:

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Shift Registers - General Questions (2)

Shift Registers - General Questions

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