<P> A computer case, also known as a computer chassis, tower, system unit, CPU (When referring to the desktop as a whole), or cabinet, is the enclosure that contains most of the components of a computer (usually excluding the display, keyboard and mouse). </P> <P> Cases are usually constructed from steel (often SECC--steel, electrogalvanized, cold - rolled, coil) or aluminium . Plastic is sometimes used, and other materials such as glass, wood and even Lego bricks have appeared in home - built cases . </P>

What is the function of a computer case