Number Systems and Codes - General Question (6)

Directions to Solve

Number Systems and Codes - General Question

41.

Digital electronics is based on the ________ numbering system.

A.	decimal
B.	octal
C.	binary
D.	hexadecimal

Answer: Option C

Explanation:

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42.

Convert the following decimal number to BCD.
127

A.	011100100001
B.	111010001
C.	001010111
D.	000100100111

Answer: Option D

Explanation:

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43.

What is the difference between binary coding and binary-coded decimal?

A.	BCD is pure binary.
B.	Binary coding has a decimal format.
C.	BCD has no decimal format.
D.	Binary coding is pure binary.

Answer: Option D

Explanation:

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44.

Determine the decimal equivalent of the signed binary number 11110100 in 1's complement.

A.	116
B.	–12
C.	11
D.	128

Answer: Option C

Explanation:

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45.

Convert the Gray code 1011 to binary.

A.	1011
B.	1010
C.	0100
D.	1101

Answer: Option D

Explanation:

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46.

What decimal number does 2⁵ represent?

A.	10
B.	31
C.	25
D.	32

Answer: Option D

Explanation:

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47.

Which of the following is an invalid BCD code?

A.	0011
B.	1101
C.	0101
D.	1001

Answer: Option B

Explanation:

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48.

The binary number 11101011000111010 can be written in hexadecimal as ________.

A.	DD63A16
B.	1D63A16
C.	1D33A16
D.	1D63116

Answer: Option B

Explanation:

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