Tape Reading
The tapes were read photo-electrically at a "gate" which was placed as near as possible to the sprocket to reduce the effect of stretched tapes. Successive characters on the tape were read by a battery of ten photocells, an eleventh for the sprocket holes and two additional ones for the "stop" and "start" signals that were hand-punched between the third and fourth and fourth and fifth channels.
Read more about this topic: Heath Robinson (codebreaking Machine)
Famous quotes containing the words tape and/or reading:
“I could buy one
Tape and get another free. I accept- Ed the deal, paid for one tape and
Chose a free one. But since I’ve been
Repeatedly billed for my free tape.”
—John Ashbery (b. 1927)
“The reading public is intellectually adolescent at best, and it is obvious that what is called “significant literature” will only be sold to this public by exactly the same methods as are used to sell it toothpaste, cathartics and automobiles.”
—Raymond Chandler (1888–1959)