Types of Computer

The different types of computer can be grouped into four major categories according to size.each category excels at specific functions.they are
Super computer
Mainframe computer
Mini computer
Micro computer

Personal computer
Workstation
 

Supercomputer:

The highly calculative and extremely intensive tasks are handled by super computers.They are capable to process trillions of calculations per second.They have the best memory capacity among all computers.They are used for weather forecasts,quantum physics,space programs etc where trillions of data is calculated and stored.the performance of super computer is commonly measured in floating point operations per second (FLOPS) instead of million instructions per second.

 Mainframe computer:

These computers are used by large organizations for critical applications and huge data processing.these are mostly used by the government and large scale businesses.They are kept in climate controlled rooms and have multiple operating systems.It has strict backward compatibility with older software.they are larger and have more processing power than some other classes of computers ; minicomputers; servers; workstations;and personal computers.

 

Mini computer:

  

Mini computers were very popular during 1970-1980.they were used widely by medium and small scale business like school offices.they were called the third generation computers and took up the space like a refrigerator and would take and were useful for storing small amount of data.
 

Micro computer:

Netbook

Laptop

 

Tablet

                                                                            Desktop
                                                       

                                                                     Smart phone

A micro computer is a small , relatively inexpensive computer with a microprocessor as it's central processing unit(CPU).It includes a microprocessor, memory and minimal input/output circuitry mounted on a single printed circuit board (PCB).It became popular in the 1970s and 1980s with the powerful microprocessor.many micro computers are personal computers.

Personal computers:

A PC can be defined as a small, relatively inexpensive Computer designed for an individual user.At home the most popular use for personal computers is playing Games and surfacing the internet.

Workstation:

Workstation is a computer used for engineering applications, desktop publishing, software development and other such types of applications which require a moderate amount of computing power and relatively high quality graphic s capabilities.

SOURCE: https://en.wikipedia.org/wiki/Mainframe_computer
                   https://en.wikipedia.org/wiki/Classes_of_computers