ASCII (American Standard Code for Information Interchange) uses 7-bit units to encode characters, allowing for 128 unique representations. The 8th bit is often used for error checking or to extend the character set in variations like extended ASCII. Unicode can use varying bit lengths, such as 8-bit, 16-bit, and 32-bit, to cover a larger set of characters.
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What exactly is ASCII and where did it originate?
What are the differences between ASCII and Unicode?
How does the extended ASCII differ from regular ASCII and what is its purpose?