48. Which of the following input/output devices is not associated with personal computers? A. mice B. color monitors C. punched cards D. dot-matrix printers E. optical scanners
Punched cards : A punched card or punch card is a piece of stiff paper that can be used to contain digital data represented by the presence or absence of holes in predefined positions. Digital data can be used for data processing applications or, in earlier examples, used to directly control automated machinery.
