How Are Various Styles of System Units on Desktop Computers, Notebook Computers, and Mobile Devices Different?
The system unit is a case that contains electronic components of the computer used to process data. On desktop personal computers, most storage devices also are part of the system unit. On most notebook computers, including netbooks, the keyboard and pointing device often occupy the area on top of the system unit, and the display attaches to the system unit by hinges. The location of the system unit on a Tablet PC varies, depending on the design of the Tablet PC. On mobile computers and devices, the display often is built into the system unit. With game consoles, the input and output devices, such as controllers and a television, reside outside the system unit. On handheld game consoles, portable media players, and digital cameras by contrast, the packaging around the system unit houses the input devices and display.