When we work in any program then we need to save our tasks somewhere. While working it is created into RAM which is temporary. To make a permanent copy of it we make a file in the hard disk. That is a file is a document where we save our tasks. Files are of two types- program files and data files. Program files are used to run programs where data files can be changed and printed.
Using folders we can keep all similar documents together. This makes our tasks easy to find out a certain file.
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