# Basic storage unit

### position （bit）

• A digit in a binary number , It can be 0 perhaps 1, Is the smallest unit of data in a computer .

### byte （Byte,B）

• The basic unit of data in a computer , Every time 8 Bits make up a byte . All kinds of information are stored in the computer 、 Processing requires at least one byte . for example , One ASCII The code is represented by a byte , A Chinese character is represented by two bytes .

### word （Word）

• Two bytes are called a word . The storage unit of Chinese characters is a word .

# Extended storage unit

The number explain conversion
1KB (Kilobyte kilobytes ) 1KB =1024B=10^3
1MB (Megabyte Megabytes abbreviation “ mega ”; In the ten thousand step counting method, it is “ One million ” byte ;) 1MB =1024KB=10^6
1GB (Gigabyte Gigabyte also called “ Gigabit ”; In the ten thousand step counting method, it is “ One billion ” byte ) 1GB =1024MB=10^9
1TB (Trillionbyte Terabytes ; In the ten thousand step counting method, it is “ mega ” byte ) 1TB =1024GB=10^12
1PB （Petabyte Petabyte ; In the ten thousand step counting method, it is “ Gigabit ” byte ） 1PB=1024TB=10^15
1EB （Exabyte Ebyte ; In the ten thousand step counting method, it is “ Baijing ” byte ） 1EB=1024PB=10^18
1ZB (Zettabyte Zebyte ; In the ten thousand step counting method, it is “ Ten Cuan ” byte ) 1ZB = 1024 EB=10^21
1YB (Yottabyte Yao byte ; In the ten thousand step counting method, it is “ Zi ” byte ) 1YB= 1024 ZB=10^24
1BB (Brontobyte In the ten thousand step counting method, it is “ QIANZI ” byte ) 1BB= 1024 YB=10^27

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