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Which data representation method uses 7-bit units to encode characters while sometimes utilizing an 8th bit for error checking or extended characters?
Hexadecimal
ASCII
Unicode
Binary
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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