Q. The first electronic digital computer contained?
✅ Correct Answer: (B)
Vacuum tubes
Explanation:
The first electronic digital computer, ENIAC (Electronic Numerical Integrator and Computer), used vacuum tubes for its circuitry.
- Vacuum tubes were the key electronic components before the invention of transistors.
Let’s briefly go over the options:
- (A) Electronic valves – another term sometimes used for vacuum tubes, but less specific in this context.
- (B) Vacuum tubes – Correct answer; ENIAC used about 18,000 of them.
- (C) Transistors – came later in the 1950s, replacing vacuum tubes.
- (D) Semiconductor memory – came even later, in the 1960s and 70s.
So, the right answer is: (B) Vacuum tubes.
Explanation by: Mr. Dubey
The first electronic digital computer, ENIAC (Electronic Numerical Integrator and Computer), used vacuum tubes for its circuitry.
- Vacuum tubes were the key electronic components before the invention of transistors.
Let’s briefly go over the options:
- (A) Electronic valves – another term sometimes used for vacuum tubes, but less specific in this context.
- (B) Vacuum tubes – Correct answer; ENIAC used about 18,000 of them.
- (C) Transistors – came later in the 1950s, replacing vacuum tubes.
- (D) Semiconductor memory – came even later, in the 1960s and 70s.
So, the right answer is: (B) Vacuum tubes.