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3.3 DATA COMPRESSION
Let us understand the meaning of compression.
Suppose, you want to send a message "AAAAABBBBCCCDDDDD".
You can compress it into "5A4B3C5D", which has the same meaning but takes up
less space. This is an example of compression.
Compression is the process of representing data or
information in a reduced form. We compress data to
reduce the size of a file.
Abbreviations are the simplest example of compression. Look at these
abbreviations.
Jan January
Feb February
Oct October
Nov November
Dec December
Sun Sunday
Sat Saturday
LOL Laughing Out Loud
UP Uttar Pradesh
These abbreviations on the first column are the compressed form of the information
on the right. We can compress the data in any way.
Level 3: Data Processing 49

