1. The sign bit is also known as the MSb (most significant bit). In a four-bit subtraction, it is bit 3.

Consider the following subtraction 1100-1001. First, figure out the sign bit of the difference. Then figure out the overflow bit value. Overflow is defined as follows: O = ! m s s s d s + m s ! s s ! d s. In this equation, m s is the sign bit of the minuend, s s is the sign bit of the subtrahend, and d s is the sign bit of the difference.

2.

The sign bit is also known as the MSb (most significant bit). In a four-bit subtraction, it is bit 3.

Consider the following subtraction 1110-1111. First, figure out the sign bit of the difference. Then figure out the overflow bit value. Overflow is defined as follows: O = ! m s s s d s + m s ! s s ! d s. In this equation, m s is the sign bit of the minuend, s s is the sign bit of the subtrahend, and d s is the sign bit of the difference.

3.

The sign bit is also known as the MSb (most significant bit). In a four-bit subtraction, it is bit 3.

Consider the following subtraction 0100-1000. First, figure out the sign bit of the difference. Then figure out the overflow bit value. Overflow is defined as follows: O = ! m s s s d s + m s ! s s ! d s. In this equation, m s is the sign bit of the minuend, s s is the sign bit of the subtrahend, and d s is the sign bit of the difference.

4.

The sign bit is also known as the MSb (most significant bit). In a four-bit subtraction, it is bit 3.

Consider the following subtraction 1111-1100. First, figure out the sign bit of the difference. Then figure out the overflow bit value. Overflow is defined as follows: O = ! m s s s d s + m s ! s s ! d s. In this equation, m s is the sign bit of the minuend, s s is the sign bit of the subtrahend, and d s is the sign bit of the difference.