# How does the computer distinguish between positive and negative numbers?

Table of Contents

- 1 How does the computer distinguish between positive and negative numbers?
- 2 How do you classify positive and negative numbers?
- 3 Which representation is usually used for negative numbers in microprocessor systems?
- 4 What does a negative and a positive equal?
- 5 Which bit of 8 bit number is used to decide number is positive or negative?
- 6 How does a machine identify negative number?

## How does the computer distinguish between positive and negative numbers?

Computers use the first bit to indicate this. If the first bit is 1 , the number is negative. If the first bit is 0 , the number is positive. To determine the value of the number, the other 7 bits are used.

**Is the difference between a positive and a negative number positive?**

The negative of a negative is the opposite positive number. When you subtract a positive integer from a negative integer, the difference is always negative.

### How do you classify positive and negative numbers?

According to the definition of a negative and positive number, Negative number: The numbers which lie on the left side of number line are negative numbers. Positive numbers: The numbers which lie on the left side of number line are positive numbers.

**Which bit is used to decide if number is positive or negative in microprocessor?**

The leftmost or the most significant bit is the sign bit. It tells the processor about the sign of the number – that is, whether the number is positive or negative. 0 in the sign bit represents a positive value and 1 represents a negative value.

#### Which representation is usually used for negative numbers in microprocessor systems?

The method used to represent signed numbers (positive and negative signs) in microprocessors is called two’s complement. In this system, positive numbers are represented as regular binary numbers. Negative numbers are represented as the two’s complement of positive numbers.

**What is the difference between the positive area and the negative area in a work of art?**

Positive space refers to the subject or areas of interest in an artwork, such as a person’s face or figure in a portrait, the objects in a still life painting, or the trees in a landscape painting. Negative space is the background or the area that surrounds the subject of the work.

## What does a negative and a positive equal?

Rule 2: A negative number times a positive number equals a negative number. When you multiply a negative number to a positive number, your answer is a negative number. It doesn’t matter which order the positive and negative numbers are in that you are multiplying, the answer is always a negative number.

**What is a positive number?**

A positive number is any number that represents more than zero of anything. Positive numbers include the natural, or counting numbers like 1,2,3,4,5, as well as fractions like 3/5 or 232/345, and decimals like 44.3. Zero is neither negative, nor positive.

### Which bit of 8 bit number is used to decide number is positive or negative?

bit is zero, the number is positive; if the H.O. bit is unique, the number will be negative. Examples:For 16-bit numbers:$8000 is negative because the H.O. bit is one.

**How do you know if a bit is negative?**

The expression #define BITS sizeof(int) * 8 gives the total number of bits in an integer. The expression ( n & (1 << (BITS -1 )) is to check MSB bit and gives 1 if the number is negative.

#### How does a machine identify negative number?

We represent negative binary numbers using a minus symbol in front of them. In computer number representation, these numbers can be distinguishable with the help of an extra bit or flag called sign bit or sign flag in the Binary number representation system for signed numbers.