MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -2nd generation computers had transistors instead of vacuum tubes.

Detailed explanation-2: -The period of second generation was from 1959-1965. In this generation, transistors were used that were cheaper, consumed less power, more compact in size, more reliable and faster than the first generation machines made of vacuum tubes.

Detailed explanation-3: -The second-generation series of computers from IBM saw approximately six times higher computational speed than computers developed using vacuum tubes in the first generation. In particular, the IBM 7090 was built using over 50, 000 transistors, and extremely fast magnetic cores.

Detailed explanation-4: -The correct answer is Second. Second Generation(1955-1964): The computer made in the second generation was completely based upon transistors.

Detailed explanation-5: -In November 1959, IBM introduced the IBM 7090. In shipping it before the 7070, the 7090 became IBM’s first Second Generation computer – and a very successful one.