# What is a D/A converter?

### The digital world is binary

##### 1. The digital world is binary

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

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

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

###### 【Ex】

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

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
##### 3.Numbers that are important 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=2048combinations
12bit=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.