first generation computer
first generation computer(architecture)
A prototype computer based on vacuum tubes and other esoteric technologies. Chronologically, any computer designed before the mid-1950s. Examples include Howard Aiken's Mark 1 (1944), Maunchly and Eckert's ENIAC (1946), and the IAS computer.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)