Understanding the Functions of a Computer System

Computers are classified into 4 types depending on the shape, size and processing capabilities. The preference of a computer is based on several factors namely, the type of CPU and processing speeds, memory and storage volume, a number of user interactions and costs. Supercomputers are known to be the most powerful which can handle millions of data and needs an exclusive environment. Next to this are the mainframe computers which also need a specific surrounding. The uniqueness of a mainframe computer is that it can be used by hundreds and thousands of people and it is very powerful that failure is close to impossible. Minicomputers are also mainframe computers but the speed and performance are comparatively less. These computers are used in smaller companies where there is a lesser number of users that interact with the system. Microcomputers are also called the personal and professional computers are the most familiar type of computer. From laptops to workstations all the computers fall into this category and it comes in different shapes and sizes. A visual representation of the cost differences and respective performances between each type of a computer is provided below. It is very clearly seen that the cost is directly proportional to the performance of the computer system.

Super Computers

Most expensive. Ranging up to £ 11.7 million

Mainframe computers

Second most expensive. Ranging up to £ 5.8 million

Mini computers

Quite cheaper. £ 6000 to £ 50,000

Micro

Cheapest. £800 to £5000