courtesy : computer case study
Information
A computer case, also known as a computer chassis, is the enclosure that contains most of the components of a personal computer (usually excluding the display, keyboard, and mouse). Cases are usually constructed from steel (often SECC—steel, electrogalvanized, cold-rolled, coil), aluminium and plastic. Other materials such as glass, wood, acrylic and even Lego bricks have appeared in home-built cases.
Layout
Computer cases usually include sheet metal enclosures for a power supply unit and drive bays, as well as a rear panel that can accommodate peripheral connectors protruding from the motherboard and expansion slots. Most cases also have a power button or switch, a reset button, and LEDs to indicate power, hard drive activity, and network activity in some models. Some cases include built-in I/O ports (such as USB and headphone ports) on the front of the case. Such a case will also (normally) include the wires needed to connect these ports, switches, and indicators to the motherboard.
