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A Computer is simply an electronic device that can store, retrieve and process data. It is divided into Hardware, which is the physical structure such as Monitor, Keyboard, Mouse, Computer Case, Motherboard; and Software, which are set of instructions which tell the hardware what to do and how to do it; like the web browsers, word processors, games and file explorers.
There are many different types of computers which include:
Desktop Computers: These types of computers have the computer case, monitor, keyboard, and mouse.
Laptop Computers: is another type of computer which is bettery-powered computer and can be carried along because of its portability and can be used anywhere.
Tablets Computers: which can be handled and are more portable than laptops and use a touch sensitive screen for navigation and typing, e.g. iPad.
Server Computers: We also have server computers that serves up information to other computers on a network.
It should be noted that Personal Computers come in two styles: PC and Mac, with different look. However, PC is the most commonly used computer and has Microsoft Windows Operating System. Mac (Macintosh) computer on the other hand use the Mac OS X Operatin System and are produced by Apple Company.
A PC Computer has some parts which include the Computer Case, Monitor, Keyboard, Mouse, and Power Cord, all of which play a very important roles. However, Laptop Computers may not necessarily have all these parts separately because thay are built in. For instance, while Desktop Computer has mouse that lets you point to objects on the screen, Laptop uses Touchpad which is touch sensitive pad that lets you control the pointer by making drawing motion with your finger.
When one looks inside the computer case, some of the things you find include Motherboard, Central Processing Unit CPU(Processor), Random Access Memory RAM, Hard Drive as well as Power Supply Unit. However, most computes have expansion slots on the Motherboard that allow you to add various other types of expansion cards.
It should also be noted that the computer hardware and software job relay on Operating System OS, which makes different programs to run at the same time. There are three most commonly used Operating Systems which are Microsoft Windows, Mac OS X and Linux.
Computer uses applications for its operations, which are softwares that allow you to do some tasks. Example of computer apps that are popular include Word Processors, Web Browsers, Media Players, Games to mention but few. There are many other applications which can be installed on the computer, or uninstall if you don't want to use them anymore.
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