punched card造句怎么写

A device which reads data from punched cards and sends them to the computer.

punched card accounting machine

A perforation, as in a punched card or paper tape.

To read the punched cards into the computer requires a card reader instead of the tape reader.

punched card controlled computer

not punched card of paper or paperboard[fur punch card machines, whether or not in strips]

ducol-punched card system

A card on which binary coded data are recorded with recording density larger than a punched card. The recorded data can be readout by optical or magnetic readers.