photoelectric scanner

photoelectric scanner

[¦fōd·ō·i′lek·trik ′skan·ər]
(computer science)
A device that scans punched cards by photoelectric means, as opposed to the standard brushes or “feelers,” or mechanical plungers.
(control systems)
References in periodicals archive ?
A photoelectric scanner rejects false notes or those of wrong denomination.
It includes a light source and a photoelectric scanner.

Full browser ?