A desktop computer is a personal computer designed for regular use at a single location on or near a desk due to its size and power requirements. Typically includes a central processing unit (CPU), monitor, keyboard, and pointing device such as a mouse.
A mouse is a computer input device used to interact with the graphical user interface of a computer by moving a pointer.
A pointing device is an input device that allows users to manipulate a cursor in a graphical user interface. The most common example is a mouse, but other types include trackballs, graphics tablets, joysticks, and various pen-type devices.
