Electronics - Number Systems and Codes

Exercise :: Number Systems and Codes - Filling the Blanks

1. 

Digital electronics is based on the _________ numbering system.

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

Answer: Option C

Explanation:

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2. 

A BCD code that represents each digit of a decimal number by a binary number derived by adding 3 to its 4-bit true binary value is _________.

A. 9's complement code
B. excess-3 code
C. 8421 code
D. gray code

Answer: Option B

Explanation:

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3. 

A binary code that progresses such that only one bit changes between two successive codes is _________.

A. 9's complement code
B. excess-3 code
C. 8421 code
D. gray code

Answer: Option D

Explanation:

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4. 

A binary number's value changes most drastically when the ____ is changed.

A. LSB
B. duty cycle
C. MSB
D. frequency

Answer: Option C

Explanation:

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5. 

The binary coded decimal (BCD) code is a system that represents each of the 10 decimal digits as a(n) ____________.

A. 4-bit binary code
B. 8-bit binary code
C. 16-bit binary code
D. ASCII code

Answer: Option A

Explanation:

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