# What is Binary?

Binary is a scheme of numbers that only has two possible values for each digit: 0 and 1. The term also describes any encoding/ decoding system in which there are only two possible states. In digital data storage, memory, communications, or processing the 0 and 1 values are sometimes called "low" and "high" or "On" and "Off".

The digital world is represented in binary, but hexadecimal, which is compatible with binary and more easily understood by people, is commonly used. Like previously mentioned, binary uses only the numbers 0 and 1. However, in some cases L/H is used as a counterpart to 0/1 notation.

In order to indicate which base is used, d(decimal), b(binary), and h (hexadecimal) are added to the end of the number.

Base 10=Decimal Base 2=Binary Base 16=Hexadecimal

Example

11d（11 in decimal）、11b（3 in decimal）、11h(=17d)

## Decimal, Binary, and Hexadecimal Conversion ### Decimal, Binary, And Hexadecimal Conversion Examples

63 0000 0011 1111 0 3 F
127 0000 0111 1111 0 7 F
255 0000 1111 1111 0 F F
1023 0011 1111 1111 3 F F
4095 1111 1111 1111 F F F

## Important Numbers to Remember

Increasing a binary number by one digit can double the value.

The values in red are often used by A/D and D/A converters.

3bit=8combinations  4bit=16combinations  5bit=32combinations  6bit=64combinations  7bit=128combinations  8bit=256combinations  9bit=512combinations  11bit=2048combinations12bit=4096combinations  14bit=16384combinations  16bit=65536combinations

### What Are Bits?

A single binary digit, which is either 0 or 1, is also referred to as a bit. 