# 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.