A laptop is a computer which is easy to carry around. A modern laptop is self-contained, with a screen, keyboard and pointing device (like a touchpad), plus usually, speakers, a microphone and a camera. This is all powered by a built-in rechargeable battery, however, the user can also plug the laptop in, to use it and recharge the battery at the same time. Also, most other external devices can be attached if required. The laptop screen folds down over the keyboard, along a hinge, for carrying.