These military standard keyboard arrangements are intended for general purpose, typewriter-like, alphanumeric keyboards implementing the Military Standard Coded Character Set(Table 1, Apgendix I,
HIL-STD-188~)i):whicihs the USA Standard Code for Information Interchange(ASCII)(USAS x3.4-1967) adapted to military communication systems and the USA Standard Character set for Optical Character Recognition(OSASCSOCR) 17 -1966.