65. Which was the first computer to use transistors instead of vacuum tubes? A. Intel-650 B. Burroughs E-101 C. Datamatic-1000 D. IBM-1401 E. None of the above
The IBM 1401 is a variable wordlength decimal computer that was announced by IBM on October 5, 1959. The first member of the highly successful IBM 1400 series, it was aimed at replacing unit record equipment for processing data stored on punched cards and at providing peripheral services for larger computers.
