IMLAC Corporation was an American electronics company in Needham, Massachusetts, that manufactured graphical display systems, mainly, the PDS-1 and PDS-4, in the 1970s.

IMLAC Corporation
Founded1968; 55 years ago (1968) in Needham, Massachusetts
Defunct1979; 44 years ago (1979)
FateAcquired by Hazeltine Corporation

The PDS-1 debuted in 1970. It was the first low-cost[1] commercial realization of Ivan Sutherland's Sketchpad system of a highly interactive computer graphics display with motion. Selling for $8,300 before options, its price was equivalent to the cost of four Volkswagen Beetles. The PDS-1 was functionally similar to the much bigger IBM 2250, which cost 30 times more. It was a significant step forward towards computer workstations and modern displays.

The PDS-1 consisted of a CRT monitor, keyboard, light pen, and a control panel on a small desk with most electronic logic in the desk pedestal. The electronics included a simple 16-bit minicomputer, and 8-16 kilobytes of magnetic-core memory, and a display processor for driving CRT beam movements.

IMLAC is not an acronym, but is the name of a poet philosopher from Samuel Johnson's novel, The History of Rasselas, Prince of Abissinia.[2]

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