Question

Explain the process of "compression of a file" in a computer in brief.​

Answer 1

Answer:

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Data compression is a process in which the size of a file is reduced by re-encoding the file data to use fewer bits of storage than the original file. A fundamental component of data compression is that the original file can be transferred or stored, recreated, and then used later (with a process called decompression).

As the Internet emerged in the 1970s, the relationship between file size and transfer speed became much more apparent. Mathematicians around the world addressed the problem for years, but it wasn’t until the Lempel-Ziv-Welch (LZW) universal lossless compression algorithms came on the scene in the mid-1980s that real benefits were realized. LZW compression was the first widely used data compression method implemented on computers and it is still used today (in various iterations): a large English text file can typically be compressed to about half its original size with LZW.

Answer 2

Answer:

Compression is the method computers use to make files smaller by reducing the number of bits (1's and 0's) used to store the information. ... Once a file has been compressed using a lossy method, any bits that are lost cannot be recovered.