What is ASCII?
ASCII stands for American Standard Code for Information Interchange. It is a character encoding standard that assigns numbers to letters, numbers, punctuation marks, and other symbols. Each character in ASCII is represented by a unique number between 0 and 127. This system allows computers to store and display text in a consistent way that all machines can understand.
Development and Purpose
The ASCII standard was created in 1963 by the American Standards Association to solve a major problem in early computing. Different computer manufacturers were using their own unique codes for letters and symbols, which made it impossible for computers from different companies to communicate with each other. ASCII provided a universal standard so all computers could use the same code for each character.
How ASCII Works
ASCII uses a 7-bit system, meaning each character is represented by seven binary digits (0s and 1s). This creates 128 possible combinations. The first 32 codes are control characters used for things like line breaks and tabs. The remaining codes represent printable characters including uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and symbols like punctuation marks.
Impact and Legacy
ASCII became the foundation for computer communication and remained the standard for decades. It is still used today in many applications, though it has been expanded to support more languages and characters. Extended ASCII (8-bit) added more characters, and newer standards like Unicode have been developed to support characters from all languages worldwide. 
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