Comparison of Computer Generation

There are five computer generation, the following table summarise all main features comparison of related generation as:

Fifth Computer Generation

The timing of Fifth Computer Generation: 1985 - now

The main characteristic of fifth generation computer is as following:

Fourth Computer Generation

Fourth Generation Computer Timing: 1971-1985

This generation computers are more advanced to other its previous generation computers.
The scientist Ted Haff makes the first microprocessor of the world in 1971.

The main characteristics of fourth generation computers is as following:

Third Computer Generation

Third generation of computer was introduced when there were comes IC(Integrated Circuit).
Integrated Circuit is a powerful electronic thing that was makes to merging of many transistor.
The main characteristic of third generation computers as following:

Second Computer Generation

"A small  but powerful discovery change all the thing of the world."

The above sentence fit in the second computer generation, when transistor comes.
Transistor was invented by William Shockly and his team at the Bell laboratories.
Transistor is an electronic item that was make semi-conductor metal. As compare of working capacity of transistor with Vaccum Tube is too much so its replaced Vaccum Tube and its second generation of computer comes.

First Computer Generation

The first computer comes since 1946 named ENIAC. ENIAC stand for Electronic Numerical Integrator And Calculator. ENIAC invented by J.P.Eckert and J.W.Mauchiy. The characteristic of first computer generation is as following:

Decrease Character Pyramid

Q. Write a C program to print the following decrease character pyramid as:

EEEEE
DDDD
CCC
BB
A

Ans.

/*c program for decrease number pyramid*/
#include<stdio.h>
int main()
{