Question

The bitwise complement of 0 is ___________

(a) 00000001

(b) 10000000

(c) 11111111

(d) 11111110

The question was posed to me by my college director while I was bunking the class.

This question is from The Arithmetic & Logic Unit in chapter Basic Computer Organisation of Computer Fundamentals

Answer 1

Correct answer is (c) 11111111

Explanation: Bitwise complement is basically used to convert all the 0 digits to 1 and the 1s to 0s.

So, for 0 = 00000000(in 8-bits) ::: 11111111(1s complement). The bitwise complement is often referred to as the 1s complement.