# Digital Electronics MCQs Set-2

1. In direct conversion from binary to hexadecimal, if the last group does not have 4- bits, then it is padded with ______________ to make it four bits.
• Zeros
• Ones
• Two zeros and two ones
• One zero and three ones
2. What is the hex equivalent of 916, a 4-bit binary number?
•  11112
•  10012
•  01102
•  11002
3. The sign information has to be encoded along with the ___________ to represent the integers completely.
• No. of bits
• Position
• Magnitude
• Weight
4. Which one is the possible technique for representing signed integers?
• Signed Magnitude Representation
• All of the above
5. What is used to represent the signed magnitude?
• MSB
• LSB
• Both
• None of the above
6. What is the corresponding hex number of the signed magnitude -127?
•  (7F)16
•  (FF)16
•  (00)16
•  (80)16
7. What are the two ways of representing the 0 with signed magnitude representation?
• -0 and -0
•  +0 and +0
•  -0 and +0
• None of the above
8. (FA)16 is the ________ one’s complement representation of -5.
•  4-bit
•  8-bit
•  16-bit
• 2-bit
9. 2’s complement is used to represent signed integers, especially __________ integers.
• Negative
• Positive
• Both A and B
• None of the above
10. In ___________________, to encode a negative number, first the binary representation of its magnitude is taken, complement each bit and then add 1.
•  Signed integer representation
• 1’s complement representation
• 2’s complement representation