IBM STRETCH/HARVEST (IBM 7950)
The IBM STRETCH/HARVEST (IBM 7950) was a massive, one-of-a-kind, transistorized supercomputer custom-built for the U.S. National Security Agency (NSA) in 1962. It combined the base computing power of the IBM 7030 (Stretch) with highly specialized cryptanalytic hardware and the pioneering TRACTOR magnetic tape system.