Mainframe computers, Mini computers, Micro computers And Today computers...

Mainframe computers

Used in big industries.
Have a lot of memory and storage space.
Can facilitate more than 150 users.
Have price in tens of million dollars.

Image result for Mainframe computers

Mini computers

Not actually mini.
But smaller than mainframes in size, speed , storage and price.
They can also serve many uses at a time.
Used in small business organizations and institutes.
Can facilitate 30 – 40 users at a time

Image result for Mini computers

Micro computers

Also called personal computers.

Most popular.
Examples are laptops , desktop computers, mobile phones. I Pads etc.

Today computers:-

Generations of Computer:

1st Generation(1945-1950)
Made up of vacuum tube.
Very slow expensive and 

2nd Generation: 

Made up of Transistors instead of vacuum tube.
Small and less expensive as compared to 1st generation.
E.g. EDVAC and IBM 1401

3rd Generation:

Made up of ICs. (integrated circuit)
IC is a small chip having hundred of transistors on it.
High in speed.
Low in price.

4th Generation Computers: (1970-1980)
Large scale integration.
Thousands of transistors on single chip.
Also called micro processor
Example is

Fifth Generation Computers: (1980  on wards)

Computers that can think and work like human.
Computers having intelligence called AI.
E.g. robots used in large industries.

Post a Comment

Thanks You....

Previous Post Next Post