Question

First-generation computers used which technology?

• A. Transistors
• B. Integrated Circuits
• C. Vacuum Tubes
• D. Microprocessors

Hint:

Vacuum tubes made early computers very large and power-hungry.

Answer 1

The Correct Option is C

Step 1: Recall computer generations.
Computers are classified into generations based on the technology used.
Step 2: Identify first-generation technology.
First-generation computers (1940s–1950s) used vacuum tubes for circuitry.
Step 3: Compare with other options.
Transistors were used in second-generation computers.
Integrated circuits belong to third-generation computers.
Microprocessors are used in fourth-generation computers.
Step 4: Conclusion.
Therefore, first-generation computers used vacuum tubes.