GENERAL KNOWLEDGE

Detailed explanation-1: -John Bardeen, Walter Brattain and William Shockley invented the first working transistors at Bell Labs, the point-contact transistor in 1947. Shockley introduced the improved bipolar junction transistor in 1948, which entered production in the early 1950s and led to the first widespread use of transistors.

Detailed explanation-2: -1. Created in 1948 at Bell Telephone Laboratories. The invention of the transistor, which has had a profound impact on the electronics industry, was first developed in 1948. This moment marked the dawn of the electronic age.

Detailed explanation-3: -The transistor, aka point-contact transistor, is a semiconductor device that can amplify or switch electrical signals. It was developed to replace vacuum tubes. Vacuum tubes were bulky, unreliable and consumed too much power. So AT&T’s research-and-development arm, Bell Labs, started a project to find an alternative.

Detailed explanation-4: -Under Shockley’s direction, John Bardeen and Walter Brattain demonstrated in 1947 the first semiconductor amplifier: the point-contact transistor, with two metal points in contact with a sliver of germanium. In 1948, Shockley invented the more robust junction transistor, built in 1951.