Spring 2002 CSCI 255 Practice Homework 2

This homework is not graded. It is practice for the 11 February quiz.

Problem 1

Add the following six-bit twos-complement number. Which, if any, of the additions result in an overflow?

• 100100 + 011010
• 010110 + 111111

Problem 2

Compute the following bit-wise logical operations on six-bit binary numbers.

• 011011 AND (101000 OR 000001)
• NOT(001100) AND NOT(011110)

Problem 3

Complete a truth table to describe the logic circuit shown below.