<character> The 7-bit version of ASCII, which preceded (and is the basis for) 8-bit versions such as Latin-1, MacASCII and later, even larger coded character sets such as Unicode.
US-ASCII is defined in Standard ANSI X3.4-1986, "US-ASCII. Coded Character Set - 7-Bit American Standard Code for Information Interchange".
Try this search on Wikipedia, OneLook, Google
Nearby terms: usability « USAModSim « usa.net « US-ASCII » USB » USB 2.0 » USB Adapter Card Support