Digital Electronics Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Test with Answer Key.
1. A number system with radix 2 is known as
A) Decimal
B) Hexadecimal
C) Octal
D) Binary
2. A group of four bits is known as
A) Byte
B) Nibble
C) Bit
D) Word
3. Which one of the following is an invalid state in 8-4-2-1 binary coded decimal counter
A) 1001
B) 1100
C) 1000
D) 0011
4. 11001, 1001, and 111001 correspond to the 2’scomplement representation of the following set of numbers
A) 25, 9 and 57 respectively
B) -6, -6 and -6 respectively
C) -7, -7 and -7 respectively
D) -25, -9 and -57 respectively
5. To get an excess-3 code from BCD code
A) 0110 is subtracted
B) 0011 is subtracted
C) 0011 is added
D) 0110 is added
6. Which is typically the longest: bit, byte, nibble, word?
A) bit
B) word
C) nibble
D) byte
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Tough questions