What is punched tape?
Q: What is punched tape?
A: Punched tape is a medium for data storage made of a long strip with holes in it.
Q: How are the holes in punched tape used?
A: The holes in punched tape are used to represent information.
Q: When was punched tape widely used?
A: Punched tape was widely used in the 1950s and 1960s.
Q: What was punched tape first used for?
A: Punched tape was first used to program looms in the 18th century.
Q: What is the Vernam cipher?
A: The Vernam cipher is a type of encryption that combines a character of the punched tape with that of a key to give the encoded character.
Q: When was the Vernam cipher developed?
A: The Vernam cipher was developed by Gilbert Vernam, a telecommunication engineer, in 1917.
Q: What is the significance of the Vernam cipher?
A: The Vernam cipher is an automated one-time pad and has been called "perhaps one of the most important in the history of cryptography" by the NSA.
