Over centuries the modern computer has reached its present state. There are five generations of computers, each with its own distinctive features and characterstics. First Generation Computers ...

A computer that used vacuum tubes as switching elements; for example, the UNIVAC I. See computer generations. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

report writers and spreadsheets put large numbers of people in touch with the computer for the first time. See query language and report writer. The 21st century ushered in the fifth generation ...