chadless punch

chadless punch
A paper tape punch that does not produce little pieces of paper. Instead, "the perforations are not completely cut out but the chads are permitted to remain attached to the perforated material (for example, tape)". (U.S. Patent 2,255,794, filed May 20, 1939)

Wikipedia foundation.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Punched tape — Five hole and eight hole punched paper tape Punched tape or paper tape is an obsolete form of data storage, consisting of a long strip of paper in which holes are punched to store data. It was widely used during much of the twentieth century for… …   Wikipedia

  • Chad (paper) — Chads from punched cards. Each chad is about 1/8 inch (3 mm) long …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”