MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -The correct answer is Second. Second Generation(1955-1964): The computer made in the second generation was completely based upon transistors. Transistors replaced vacuum tubes in computers .

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 period of the first generation was from 1946-1959. The computers of the first generation used vacuum tubes as the basic components for memory and circuitry for CPU (Central Processing Unit). Was this answer helpful?

Detailed explanation-4: -The correct answer is Transistors. Vacuum Tubes were replaced by Transistors. The second-generation computers emerged with the development of Transistors.

Detailed explanation-5: -A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry. Although superseded by second-generation transistorized computers, vacuum-tube computers continued to be built into the 1960s. These computers were mostly one-of-a-kind designs.