COMPILER DESIGN

Detailed explanation-1: -The period of first generation was from 1946-1959. The computers of first generation used vacuum tubes as the basic components for memory and circuitry for CPU (Central Processing Unit).

Detailed explanation-2: -The Atanasoff–Berry computer, a prototype of which was first demonstrated in 1939, is now credited as the first vacuum-tube computer.

Detailed explanation-3: -1904: British engineer John Ambrose Fleming invents and patents the thermionic valve, the first vacuum tube. With this advance, the age of modern wireless electronics is born.

Detailed explanation-4: -Although the development of computers began around 1940, the first generation of computers is considered from 1946 to 1959. During this period, computers were developed using vacuum tubes as the main component. Vacuum tubes helped provide circuitry for the central processing unit.

Detailed explanation-5: -The first generation of software for early stored-program digital computers in the late 1940s had its instructions written directly in binary code, generally written for mainframe computers.