The 7-bit version of AsCII, which preceded (and is the basis for) 8-bit versionssuch asLatin-1, MacAsCII and later, even larger coded character setssuch asUnicode. Us-AsCII is defined in standard ANsI X3.4-1986, "Us-AsCII. Coded Character set - 7-Bit American standard Code for Information Interchange". (1998-10-18)