Generations of computers MCQ — 3 Practice Questions with Answers

Explanation

Second-generation computers are generally associated with the transistor era, replacing vacuum tubes and improving size, speed, reliability, and power use. In this question, the published key gives the period 1959 to 1965, which matches the standard exam-level timeline for second-generation machines. The years 1649 to 1670 belong far before electronic computers. The period 1965 to 1970 is normally linked with third-generation computers using integrated circuits. The range 1970 to 1990 is closer to later generations based on microprocessors and personal computing.

Explanation

The use of Integrated Circuits began with the third generation of computers. First-generation computers used vacuum tubes, which made machines large, hot and power-hungry. Second-generation computers moved to transistors, improving size and reliability but not yet using ICs as the core technology. Third-generation systems adopted Integrated Circuits, allowing more compact, faster and more reliable computers. Fourth-generation computers are associated mainly with microprocessors and very large-scale integration, which came after IC-based third-generation machines.

Explanation

First-generation computers used vacuum tubes as the main electronic component and magnetic drums for memory. This matches the features named in the question. Second-generation computers replaced vacuum tubes with transistors, making them smaller and more reliable. Third-generation computers used integrated circuits, while fourth-generation computers are associated with microprocessors and very large-scale integration. Since the question specifically combines vacuum-tube circuitry with magnetic-drum memory, the first generation is the correct generation, and the later generations describe different hardware technologies.