bit, Byte, KB, MB, GB, TB, PB, EB, ZB, YB, DB, NB
0, 1 //兩種狀態
bit //位
Byte //字節
1Byte = 8 bit = 2的3次方
1KB = 1024Byte = 2的10次方Byte
1MB = 1024KB = 2的20次方Byte
1GB = 1024MB = 2的30次方Byte
1TB= 1024GB = 2的40次方Byte
1PB= 1024TB = 2的50次方Byte
1EB= 1024PB = 2的60次方Byte
1ZB= 1024EB = 2的70次方Byte
1YB= 1024ZB = 2的80次方Byte
1DB= 1024YB = 2的90次方Byte
1NB= 1024DB = 2的100次方Byte