Key punch

What is Key punch?

Key punch definition and meaning on Dictionary terms:
Also key punch. Also called card punch. a machine, operated by a keyboard, for coding information by punching holes in cards or paper tape in specified patterns.

verb (used with object)
to punch holes in (a punch card or paper tape), using a keypunch.
to insert (data) into a computer by means of a keypunch: to keypunch code numbers.