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CDC was formed in 1957 as a spin-off of Sperry. It started off by selling memory systems, but in 1958 the now-legendary Seymour Cray signed up. The company released what could be described as the first minicomputer — the 160A — in 1960, but its attention soon turned to producing the fastest computers available.
The CDC 6600 (pictured) came out in 1964, trouncing the competition. It was at least 10 times faster than any rival computer, with a standard mathematical operations rate of 500 kiloflops. The 6600 inspired a series of retaliatory tactics from IBM — the ACS-1, which never made it to production, and the non-existent Model 92 — that may have failed, but nonetheless hit sales of CDC's machine through an early campaign of 'fear, uncertainty and doubt' (FUD).
Although Cray left in 1972, CDC continued to dominate the world of supercomputing during the first half of that decade. After the first Cray-1 was installed in 1976, CDC's lead in the field slipped. The company tried to move into other markets, gaining considerable success from sales of high-performance hard drives. However, it pulled out of hard drives in 1988, and what was left of CDC ended up being merged into BT's Global Services unit soon after.
Photo credit: Steve Jurvetson