COMPUTER FUNDAMENTALS

Detailed explanation-1: -The computers made in the second generation were completely based upon transistors, not on vacuum tubes. Until the late 1950s, the use of transistor did not see widespread in computers; however, it was invented at Bell Labs by Walter H. Brattain (1902-1987), John Bardeen (1908-1991), and William B.

Detailed explanation-2: -2nd generation computers had transistors instead of vacuum tubes.

Detailed explanation-3: -The bipolar transistor was invented in 1947. From 1955 onwards transistors replaced vacuum tubes in computer designs, giving rise to the “second generation” of computers.