first-generation computer[¦fərst jen·ə¦rā·shən kəm′pyüd·ər]
A computer from the earliest stage of computer development, ending in the early 1960s, characterized by the use of vacuum tubes, the performance of one operation at a time in strictly sequential fashion, and elementary software, usually including a program loader, simple utility routines, and an assembler to assist in program writing.
first-generation computerA computer that used vacuum tubes as switching elements; for example, the UNIVAC I. See computer generations.
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