A
computer case also known as a
computer chassis,
tower,
system unit,
cabinet,
base unit or simply
case is the enclosure that contains most of the components of a
computer (usually excluding the display, keyboard and mouse).
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 blocks have appeared in home-built cases.