Digital Computer Electronics - Section 1 (4)

25.

The Gray code for decimal 7 is

A.	0111
B.	1011
C.	0100
D.	0101
E.	None of the above

Answer: Option C

Explanation:

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26.

A diagram that illustrates the ore (Logic) of functions in a progran called a

A.	Flowchart
B.	Sequence of steps
C.	Direction of flow
D.	All of the above
E.	None of the above

Answer: Option A

Explanation:

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27.

An OR gate has 6 inputs. What is the only input word that produces a 0 output?

A.	000000
B.	000111
C.	111000
D.	111111
E.	None of the above

Answer: Option A

Explanation:

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28.

The ASCII

A.	is a subset of 8-bit EBCDIC
B.	is used only in Western Countries
C.	is version II of the ASC Standard
D.	has 128 characters, including 32 control characters
E.	None of the above

Answer: Option D

Explanation:

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29.

The hexadecimal digits are 0 to 9 and A to _____

A.	E
B.	F
C.	G
D.	D
E.	None of the above

Answer: Option B

Explanation:

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30.

Digital design often starts by constructing a _____ table.

A.	Standard
B.	Two-stage
C.	Truth
D.	Two-dinensional
E.	None of the above

Answer: Option C

Explanation:

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31.

What is the 2's complement of 0011 0101 1001 1100 number?

A.	1100 1010 1100 1011
B.	1100 1010 0110 0011
C.	1100 1010 0110 0100
D.	1100 1010 1111 1111
E.	None of the above

Answer: Option C

Explanation:

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32.

A _____ TTL device can sink up to 16mA and can source up to 400 MA.

A.	Low-power
B.	high-power
C.	Standard
D.	Schottky
E.	None of the above

Answer: Option C

Explanation:

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