There are two categories of data compression. The first reduces the size of a single file to save storage space and transmit faster. The second is for storage and transmission convenience. The ...

The measurement of compressed data. For example, a file compressed into 1/4th of its original size can be expressed as 4:1, 25%, 75% or 2 bits per byte. See archive program and data compression ...

Data compression enables music files to be drastically reduced in size. Music on a compact disc is uncompressed. An average song lasting three minutes requires about 32MB of storage.