-
A difference engine is a mechanical calculator designed to calculate polynomial functions at high speed. It had been created in 1822 by Charles Babbage.
-
Colossus was the world's first electronic digital computer that was programmable. The Colossus computers were developed for British code breakers during World War II. It is a extremely large computer that is designed to decode encrypted messages.
-
A floppy disk also called a diskette, is a storage medium that is converted to a thin and flexible disk. The floppy disk can be put in a floppy disk drive to run it.
