Ferranti Pegasus computer printer and punched-tape set, 1956.
© Science Museum / Science & Society Picture Library
This computer was designed by Christopher Strachey (1916-1975) while working at the National Research and Development Corporation (NRDC). He based his design on his experiments while working with Elliot Bros, where he pioneered the idea of constructing computers from modular packages. Strachey also devised a new type of logic design for Pegasus, which made the computers easy and logical to programme, and thus popular with their users. The control desk of the Pegasus includes paper-tape input/output equipment. The standard input device for Pegasus is a 200 character-per-second, five-track, paper-tape reader. The standard output device is a 33 character-per-second paper-tape punch, the tape from which is connected to a teleprinter which prints at seven characters-per-second.