## Most significant bit becomes the sign bit.

## Available values must be divided among positive numbers, negative numbers, and zero.

## Overflow can dramatically change a result.

- If the result of adding two positive numbers is negative, overflow occurred.
- If the result of adding two negative numbers is positive, overflow occurred.

00010111 23

+

00000000 0 correct, no overflow

Adding 75 to 81.

01001011 75

+

10011100 156 not correct, overflow (10011100 is negative)

Explain the difference between overflow and carry.