What is Desktop (or) Personal Computers and How it Works

Desktop computer also known as personal computers (P.C’s) are the most popular type of computer in use today. Computers may be called ‘Microcomputers’. Which are light weight and portable. It designed for individual users, these devices include a monitor, keyboard, mouse, and Other Peripherals like Speakers, printers, scanners etc. It used for word processing, accounting, desktop publishing, preparation and delivery of presentations, and database management etc.,.

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What is Workstations and How it Works

Workstations are also desktop machines, consisting of more powerful processor, and large display unit (higher-quality monitor), more RAM and more Hard Disk capacity. But they are only used by one person at a time (single-user computers). Most workstations have built their hardware to connect to a local area network (LAN). It support applications that require high-quality graphics capabilities and a lot of memory, such as desktop publishing (DTP), engineering applications, software development etc.,

It designed to support more than one user at a time. It possesses large storage capacity and operates at a higher speed. It is used in multi-user system in various users can work at the same time. They also used as in Local Area Networks (LAN).These are used for process control, cad, scientific research and on line reservation systems etc.,

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What is Mini Computers and How it Works

It designed to support more than one user at a time. It possesses large storage capacity and operates at a higher speed. It is used in multi-user system in various users can work at the same time. They also used as in Local Area Networks (LAN).These are used for process control, cad, scientific research and on line reservation systems etc.,

Ex: PDP-11, HCL Magnm, HCL Oaysi, HCL Horizon II E, IBM 9375 etc.,

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What is Mainframe Computers and How it Works

Mainframe Computers are generally 32-bit microprocessors. They required large storage capacity and high processing speed. These are used for very large data handling where multi user environment is needed (parallel data processing). Mainframe computers can be used by as many as hundreds or thousands of users at the same time. There are organizations such as banks and insurance companies which process large number of transactions online.

Ex : IBM 4300, IBM -370, IBM- 360, DEC, ICL etc.,

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What is Super Computers and How it Works

Super computers are the fastest computers in the world. These computers are fastest and most expensive machines. It consists of thousands of processors. These are high processing speed compared to any other computers. These are used for biomedical research, aircraft design, whether forecasting and other science and technology.

Ex: CRAY -1, CRAY -2, ETA -10, CYBER 205, CDC, CRAY XMP, STAR 100, etc.,

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What Micro Computers and How it Works

These are the mostly used computers in small business and companies and basically single user computers.There are lowest end of the computer range in terms of speed and storage capacity. Micro Computers are also called personal computers. The first micro computers were built of 8-bit microprocessor chips. Most common use application of personal computers is in this category.

Ex. DCM Tandy, Commodore, Uptrans 800, PC-AT, IBM PC etc.,

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