Code Converters and Multiplexers - General Questions (2)

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Code Converters and Multiplexers - General Questions

For the following conditions on a 7485 magnitude comparator, what will be the state of each of the three outputs?

A₀ = 0	B₀ = 1	I_A < B = 0
A₁ = 1	B₁ = 0	I_A = B = 1
A₂ = 1	B₂ = 0	I_A > B = 0
A₃ = 0	B₃ = 0

A.	A = B = 0, A < B = 0, A > B = 1
B.	A = B = 0, A < B = 1, A > B = 0
C.	A = B = 1, A < B = 0, A > B = 0
D.	A = B = 0, A < B = 0, A > B = 0

Answer: Option A

Explanation:

No answer description available for this question

10.

Why is the Gray code more practical to use when coding the position of a rotating shaft?

A.	All digits change between counts.
B.	Two digits change between counts.
C.	Only one digit changes between counts.

Answer: Option C

Explanation:

No answer description available for this question.

11.

How is an encoder different from a decoder?

A.	The output of an encoder is a binary code for 1-of-N input.
B.	The output of a decoder is a binary code for 1-of-N input.

Answer: Option A

Explanation:

No answer description available for this questioN

12.

A microcontroller differs from a microprocessor in that it has several ________ ports and ________ built into its architecture, making it better suited for ________ applications.

A.	communication, PROMs, control
B.	parallel, logic gates, processing
C.	input/output, memory, control
D.	data, memory, decoding

Answer: Option C

Explanation:

No answer description available for this question.

13.

One way to convert BCD to binary using the hardware approach is:

A.	with MSI IC circuits
B.	with a keyboard encoder
C.	with an ALU
D.	UART

Answer: Option A

Explanation:

No answer description available for this question

14.

What is the status of the inputs S₀, S₁, and S₂ of the 74151 eight-line multiplexer in order for the output Y to be a copy of input I₅?

A.	S0 = 0, S1 = 1, S2 = 0
B.	S0 = 0, S1 = 0, S2 = 1
C.	S0 = 1, S1 = 1, S2 = 0
D.	S0 = 1, S1 = 0, S2 = 1

Answer: Option D

Explanation:

No answer description available for this question.

15.

Why is a demultiplexer called a data distributor?

A.	The input will be distributed to one of the outputs.
B.	One of the inputs will be selected for the output.
C.	The output will be distributed to one of the inputs.

Answer: Option A

Explanation:

No answer description available for this question.

16.

The primary use for Gray code is:

A.	coded representation of a shaft's mechanical position
B.	turning on/off software switches
C.	to represent the correct ASCII code to indicate the angular position of a shaft on rotating machinery
D.	to convert the angular position of a shaft on rotating machinery into hexadecimal code

Answer: Option A

Explanation:

No answer description available for this question

Code Converters and Multiplexers - General Questions (2)

Code Converters and Multiplexers - General Questions

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