Correct Answer:
C. Integrated Circuits (ICs)
Computer generations are categorized by the fundamental electronic technology used, which dictates their size, speed, and capabilities. Understanding these technological shifts is crucial.
- A: Vacuum Tubes characterized first-generation computers (1940s-1950s), making them large and power-intensive.
- B: Transistors defined second-generation computers (late 1950s-early 1960s), offering improvements in size and efficiency.
- C: Integrated Circuits (ICs) is the correct answer. Third-generation computers (mid-1960s-early 1970s) utilized ICs, leading to significant reductions in size, increased speed, and improved reliability.
- D: Microprocessors emerged in fourth-generation computers (1970s-present), enabling the development of personal computers.