Different Types of Computer Systems

PC

A PC is a general-purpose tool built around a microprocessor. It has lots of different parts -- including memory, a hard disk, a modem, and more -- that work together. "General purpose" means that you can do many different things with a PC. You can use it to type documents, send e-mail, browse the Internet and play games.

Laptop

They're completely portable, and they use less power and make less noise than a PC. Laptops are also more expensive than than a normall PC.Overall, lap­top and desktop computers are very similar. They have the same basic hardware, software and operating systems.

Netbook

A Netbook is a miniature laptops, with small displays and keyboards, but they don't have some of the features that come standard laptop.For years, these companies have been making portable computers smaller, lighter, and more powerful -- and they've been successful with ultra-portable PCs called netbooks.

PDA

The main purpose of a personal digital assistant (PDA) is to act as an electronic organizer or day planner that is portable, easy to use and­ capable of sharing information with your PC. It's supposed to be an extension of the PC, not a replacement.

Games console

Home video game systems, also known as consoles, are a popular form of entertainment. In 2000, Sony estimated that one out of every four households in the United States had a Sony PlayStation. Since then the numbers have only increased, with systems like the Nintendo Wii luring the Holy Grail of the video game market: the casual gamer.

Tablet

A tablet personal computer or tablet PC is a tablet-sized computer that also has the key features of a full-size personal computer. A tablet PC is essentially a small laptop computer, equipped with a rotatable touchscreen as an additional input device, and running a standard PC operating system like Windows or Linux.

Server

Server is a physical computer (a hardware system) dedicated to running one or more such services to serve the needs of users of the other computers on the network. Depending on the computing service that it offers it could be a database server, file server, mail server, print server, web servers, or other.