MSI Logic Circuits - General Questions (2)

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MSI Logic Circuits - General Questions

What is the HDL key issue in the design of the MUX and DEMUX?

A.	Having the MUX and DEMUX part of the library
B.	Using the case statement in the process
C.	Describing the functions
D.	Assigning signals under certain conditions

Answer: Option D

Explanation:

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10.

In an AHDL BCD to binary code converter, how is multiplication by 10 accomplished?

A.	By using the shifting of bits
B.	By using the library multiplication function
C.	By using integer types
D.	By using the multiplication operator

Answer: Option A

Explanation:

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11.

Which is the decimal number for the BCD number, 10110110?

A.	182
B.	36
C.	116
D.	10110110 is not a valid BCD number.

Answer: Option D

Explanation:

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12.

Determine the correct output for the multiplexer and its associated timing diagram given below.

mcq9_1013_1

A.	Ya
B.	Yb
C.	Yc
D.	Yd

Answer: Option D

Explanation:

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13.

What are the outputs of a 7485 four-bit magnitude comparator when the inputs are A = 1001 and B = 1010?

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

Answer: Option D

Explanation:

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14.

What type of device is shown in the given figure, and what inputs (A3,A2,A1,A0) are required to produce the output levels as shown?

mcq9_1008_2

A.	A binary-to-decimal encoder; 0,1,1,1
B.	A decimal-to-binary decoder; 1,1,1,0
C.	A BCD-to-decimal decoder; 0,1,1,1
D.	A decimal-to-BCD encoder; 1,1,1,0

Answer: Option C

Explanation:

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15.

Referring to the figure given below, what output code will appear on the output (A3,A2,A1,A0) when the 5 key is pressed?

mcq9_1011_2

A.	1010
B.	0101
C.	1101
D.	1011

Answer: Option A

Explanation:

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16.

Multiplexing of digital signals is usually required when:

A.	moving data internally within a microprocessor.
B.	moving data between memory and storage registers in a microprocessor.
C.	moving data over long distance transmission lines.
D.	moving data internally within a microprocessor or between memory and storage registers.

Answer: Option C

Explanation:

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MSI Logic Circuits - General Questions (2)

MSI Logic Circuits - General Questions

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