electrographic pencil

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Punched card — Overpunch redirects here. For the code, see Signed overpunch. A punched card, punch card, IBM card, or Hollerith card is a piece of stiff paper that contains digital information represented by the presence or absence of holes in predefined… … Wikipedia
Mark sense — Main article: Unit record equipment Electrographic is a term used for punched card and page scanning technology that allowed cards or pages marked with a pencil to be processed or converted into punched cards. That technology was sold by IBM, its … Wikipedia
Reynold B. Johnson — Reynold Rey Johnson (1906 1998) was an American inventor and computer pioneer. A long time employee of IBM, Johnson is said to be the father of the disk drive. Other inventions include automatic test scoring equipment and the videocassette tape.… … Wikipedia
Graphics tablet — This article is about the computer input device. For other tablet devices, see Tablet device (disambiguation). A graphics tablet (or digitizer, digitizing tablet, graphics pad, drawing tablet) is a computer input device that enables a user to… … Wikipedia

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