Web Cameras

Web cameras, or web cams, are devices that connect to a computer and display a video image of whatever it is recording. This video image can be transmitted over the Internet, allowing a user in another location the ability to see the video in real-time. Web cameras are used often in business for video conferences, and are also a great tool for families to use to stay connected from different parts of the world.

Microphones

A microphone is a type of input device, or a device that receives information from a user. You connect the microphone to the computer and use the computer to record sound or to communicate with another computer user via the Internet. Many computers come with built-in microphones.

Power Supply Unit

The power supply unit in a computer converts the power from the wall outlet to the type of power needed by the computer. It sends power through the cables to the motherboard and other components.

Network card

The network card allows your computer to communicate over a network. With the network card you can set up a home network with a few computers and connect them by via Ethernet cords or wirelessly. Network cards used to be expansion cards that plugged into the motherboard; however, most newer computers have a network interface built into the motherboard.

Sound Card

The sound card, also called an audio card, is another type of expansion card. It lets the computer play sounds through speakers. Some motherboards feature integrated sound, and do not require a separate sound card.

Video card

The video card is responsible for what you see on the monitor. If you like playing graphic-intense games on the computer, a good video card is important to you. The main function of the video card is to generate and output images to the computer screen. Better graphics card equals better performance when playing games or working on a high resolution monitor.