## What is a Binary value?

Binary values are also known as `Base 2`

values.

In a computer, all the information is stored in binary format.

:Example`(1001001010) Base 2`

The reason why we are calling a binary value a `Base 2`

value is, at each position a __binary digit__ can be picked from either 0 or 1, meaning for each binary digit we have two combinations.

## What is a Decimal value?

Decimal values are also known as `Base 10`

values.

- We use decimal values in our day-to-day life i.e. if we go to a supermarket the price of items are written in decimal format.

:Example`(345) base 10`

The reason why we are calling a decimal value as `Base 10`

value is, at each position a decimal digit can be picked from numbers ranging from `0 to 9`

meaning for each digit we have a total of 10 possibilities here.

## What is Octal value?

Octal values are also known as `Base 8`

values.

- Octal & Hexadecimal values were widely being used during the 80's computing era. Both these number systems were the compact form of a binary system.
- For the human mind, it is difficult to represent and remember a large value in binary format.
- Hence both Octal and Hexadecimal formats were introduced to make it easy.

:Example`(123) Base 8`

- Each octal digit can be picked from numbers 0 to 7 and having a total of 8 combinations, hence we are calling it a Base 8 number.
- We need 3 bits to represent an octal digit.

## What is the Hexadecimal value?

Hexadecimal values are also known as `Base 16`

values.

- Each hexadecimal digit can be picked from following characters i.e. (0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F)
- We have a total of 16 combinations for each hexadecimal digit. Hence we call it a Base 16 value.

:Example`(A3FBCFF) Base 16`

In computer memory, 4-bits are required to represent each Hexadecimal digit.

- The least representation of the computer memory is 1 BYTE (8 bits). Also, each hexadecimal value represents the 8-bits of information.
- So, embedded programmers widely use hexadecimal representation to represent each location of their computer memory with each hexadecimal value.