理解计算机中的大小单位：bits到Tera

bits, bytes, Mega, Giga,Tera

1 bit = 0 or 1

1 byte = 8 bits 即 1 B=8 bit

1024 bytes = 1 KB 即 1 KB= 1024 B

1 Megabyte = 1024 KB 即 1 MB= 1024 KB

1 Gigabyte = 1024 MB 即 1 GB= 1024 MB

1 Terabyte = 1024 GB 即 1 TB= 1024 GB

e.g. 775,323 bytes = 775323/1024=757.1513671875 KB

Common prefixes:

- kilo, meaning 1,000. (one thousand) 10^3 (Kilometer, 1,000 meters)

- mega, meaning 1,000,000. (one million) 10^6 (Megawatt, 1,000,000 watts)

- giga, meaning 1,000,000,000 (one billion) 10^9 (Gigawatt, 1,000,000,000 watts)

- tera, meaning 1,000,000,000,000 (one trillion) 10^12