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INPUT AND OUTPUT UNITS
INPUT AND OUTPUT UNITS CONTINUED
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acoustic delay line amount arithmetic accumulator arithmetic and logic automatic computer binary bits buffer changes Chapter character printers character readers circuits clerical combinations command common computer manufacturers computer operation console operator contents control counter conversion cost cycle data handling data-processing center debugging digits Electronic employees example flow diagram format functions human input and output input data input preparation instruction instruction register key punch line printer logic unit machine language magnetic drum magnetic tape maintenance major malfunction matic computer ment normally off-line operand organization output data output equipment paper tape pattern performed personnel procedures processing produced punched card puter radix radix point reading station record represent routine selection selection sorting sequence sorting specified speed storage device storage unit switch symbols systems analysis systems design tion transaction users usually vacuum tubes zero