ALGOL COBOL FORTRAN alphabetic data alphanumeric code angular data assembler binary digit binary scale binary system bit briefing bug byte command pulses commands compiler computer code computer language computer program control signals controlled quantity correcting signals data directions error error signals feedback pulses feedback signals film data final instructions hexadecimal system information input data input quantity machine language message multiple messages noise numeric data octal system orders oscillograph data output data output quantity play polar data punch-card data random data rectangular data reference quantity ruly English signals single messages unorganized data visible-speech data