The correct answer is B. Second generation.
The first generation of computers used vacuum tubes, which were large, bulky, and consumed a lot of power. The second generation of computers used transistors, which were much smaller and more efficient than vacuum tubes. Transistorized computer circuits were introduced in the second generation.
The third generation of computers used integrated circuits, which were even smaller and more efficient than transistors. The fourth generation of computers used microprocessors, which are even smaller and more powerful than integrated circuits. The fifth generation of computers is still in development, and is expected to use artificial intelligence and other advanced technologies.
Here is a brief description of each option:
- First generation: Vacuum tubes were used as the main electronic component. These were large, bulky, and consumed a lot of power.
- Second generation: Transistors were used as the main electronic component. These were much smaller and more efficient than vacuum tubes. Transistorized computer circuits were introduced in this generation.
- Third generation: Integrated circuits were used as the main electronic component. These were even smaller and more efficient than transistors.
- Fourth generation: Microprocessors were used as the main electronic component. These are even smaller and more powerful than integrated circuits.
- Fifth generation: Artificial intelligence and other advanced technologies are expected to be used in this generation.