The Computer Size was Very large in ______.

Answer: First Generation

The size of the first generation devices was enormous. Because the first generation technologies employed thousands of vacuum tubes, which took up a lot of space, they were enormous in size.

A single semiconductor could substitute 1000 vacuum tubes, and a single integrated circuit chip could replace 1000s of transistors, allowing computers to become smaller and faster.

Characteristics of First-Generation Computers  

Electronic Numerical Integrator and Computer, was the first computer, developed with vacuum tubes in 1946. 

This computer was enormous by today’s standards. It had 18,000 vacuum tubes, occupied 15,000 sq ft space, and weighed 30 tonnes.