FUNDAMENTALS OF COMPUTER

BASIC COMPUTER CONCEPTS

HISTORY OF COMPUTERS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In 1947, scientists at Bell Laboratories invented the ____ which made computers smaller.
A
vacuum tubes
B
transistors
C
microchips
D
tabulating machine
Explanation: 

Detailed explanation-1: -John Bardeen, Walter Brattain and William Shockley invented the first working transistors at Bell Labs, the point-contact transistor in 1947.

Detailed explanation-2: -Three persons, Walter Brattain, John Bardeen and William Shockley, shared the Nobel Prize in Physics for the breakthrough that they achieved on December 23, 1947. In certain respects, a fourth person was responsible for the transistor being discovered at that time.

Detailed explanation-3: -1947: John Bardeen and Walter Brattain, with support from colleague William Shockley, demonstrate the transistor at Bell Laboratories in Murray Hill, New Jersey. It’s been called the most important invention of the 20th century.

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.

Detailed explanation-5: -In 1947, the transistor, arguably the most important invention developed by Bell Laboratories, was invented by John Bardeen, Walter Houser Brattain, and William Bradford Shockley (and who subsequently shared the Nobel Prize in Physics in 1956).

There is 1 question to complete.