A desktop computer is a personal or officially used device. It is different from portable computers such as laptop and PDAs. Desktop computer also known as microcomputers are of four types such as personal computers, workstations, internet servers and special communication computer.
Computers are now less costly and they are used to perform official tasks, organizing digital photos, video editing and internet access. A computer comes with components that are easy to replace and upgrade. It has come in a range of styles from upright towers to small form factor models.
The hardware in a desktop computer is easy to modify for a person with some intermediate knowledge of computers. The desktop computers have several components and each one has it own functions. Computer has a fan that helps to keep it cool. Motherboard links all of the components together and routes data, hard disk drive is used to store the information and optical disc drive reads most or all types of CDs and DVDs. The processor of the device is considered as the main brain of the computer, CPU cooler cools the processing unit and RAM is used for short-term data storage. It consists of card components such as graphics card, physics card, sound card, speakers to deliver sound and modem for data access through telephone line and network card to be linked to computer network or to communicate with other computers. It also features a power supply unit to provide power to the rest of the computer parts.
Computers have various ports, which allow plugging external devices. USB port is a Universal connector for connecting with any device. Ethernet is used for internet connection. The computer has headphone jack, which is used to connect sound devices. It has serial and parallel components that are used to connect devices that use serial or parallel connectors. PS/2 is used for computer mouse and keyboard. Digital Video Interface (DVI) is used to connect the monitor and keeps in the signal in digital format. Fire Wire of the computer is used to connect external hard drives and camcorders and a card reader to read digital devices.
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