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account number accounting machine adding machine applications arithmetic automatic accounting bank binary coded decimal Burroughs by-product Calculator capacity cards per minute cathode ray tube channel tape characters per second circuits common language machines companies converter copy cost decimal digits device digital computer drum memory electro-mechanical electronic accounting electronic computers electronic data processing engineering equipment example facsimile factory File Computer Flexowriter handling holes human inch input-output installed inventory key punching keyboard magnetic core magnetic core memory magnetic drum magnetic tape manual manufacturers million milliseconds office automation operation perforated printing problem produce Punched Card Accounting punched card machines punched paper tape punched tape rapid access memory record Register Remington Rand rental routine scientific shown in Figure storage stored tabulating tape punch tape reader tape-to-card telegraph telephone Teletypewriter ticket tion transmitted unit code tape UNIVAC words