41. During the following years, mainly punched cards were used. 42. Punched cards and paper tape are obsolete WORM media.43. With the development of computers punched cards found new uses as their principal input media. 44. Card readers and punches developed for punched card machines were readily adaptable for computer use. 45. The IBM 519 Card Reproducer could determine whether a deck of punched cards were equivalent. 46. Incompletely punched cards can cause serious errors to occur in data-processing operations utilizing such cards. 47. This is not the case; Kennedy Dougan patented a punched card voting system in 1890. 48. Paper tapes constructed from punched cards were widely used throughout the 19th century for controlling looms. 49. Marking the start of a job was a punched card that started with / / JOB. 50. The cover features an IBM 5081 punched card .
