ASCII and Unicode

ASCII represents first 128 characters. ASCII stands for American Standard Code for Information Interchange. It is possible to use extended ASCII characters from 128 to 255. ASCII is a mapping between numbers and symbols. ASCII is a standard, so computers adhere to it. ASCII preforms mapping between numbers and characters. Alphabet that is used in ASCII is English alphabet. However computers can use other languages. This can be done with Unicode. Current version of Unicode supports almost 155K of symbols. These symbols are not just alphabet characters, these are symbols such as smiley faces, sad faces, faces of different colors, and so on.

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