Transistor timeline: Identify the decade when the transistor was invented. Context: Consider the Bell Labs breakthrough that replaced vacuum tubes in many applications. Choose the correct decade.
General Knowledge
Inventions
Difficulty: Easy
Choose an option
Answer
Correct Answer: 1940s
Explanation
Given data
- Device: Transistor.
Concept / Approach The first point-contact transistor was demonstrated at Bell Labs in 1947 by Bardeen and Brattain, with important theory and follow-ups by Shockley — all in the 1940s.
Verification Nobel Prize in Physics 1956 awarded for the 1947 invention and subsequent work.
Final Answer 1940s.