There’s a Blue Bendix in Texas, and thanks to [Usagi Electric] it’s the oldest operating computer in North America. The Bendix G-15, a vacuum tube computer originally released in 1956 ...

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.

Along with subsequent computers that also used vacuum tubes, ENIAC was known as a first-generation computer. ENIAC could execute up to 5,000 additions per second, multiple orders of magnitude ...