1.9 SPECIALISED CARDS

Specialised cards can be added to a system. There are network cards, TV tuner cards and graphics cards. A graphics card is a component that deals with the graphics on the screen. Its job is to generate all of the images and the text on the screen. It makes the text and images out of tiny little dots called pixels. Network cards allow your computer to connect to a network. You can get wireless and wired network cards. Wired network cards need an Ethernet cable to connect to the internet, whereas a wireless network card doesn't. TV tuner cards allow your computer to receive television signal.