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ASCII (American Standard Code for Information Interchange)
A seven bit code adopted as a standard to represent specific data characters in computer systems, and to facilitate interchange of data between various machines and systems. ASCII provides 128 possible characters, the first 32 of which are used for printing and transmission control. Since common storage is an 8-bit byte (256 possible characters) and ASCII uses only 128, the extra bit is used to hold a parity bit or create special symbols.
Extended ASCII is the second half of the ACSII character set, 128 thru 255. The symbols are defined by IBM for the PC and by other vendors for proprietary use. It is non-standard ASCII.
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