Pen-based computer system

A pen-based computer includes a housing and a flat panel display integral therewith. The computer housing has a rhombohedron configuration with polyhedron-shaped top and bottom surfaces and polyhedron-shaped side and end surfaces interconnecting the top and bottom surfaces. The side and end surfaces of the housing include one adjacent side and end surface having an upward exposure, and another adjacent side and end surface having a downward exposure, with each of the side and end surfaces extending at an angle of between about 10 and 45 degrees from the top surface to the bottom surface. The flat panel display for the computer is mounted on the top surface of the housing proximate one corner, and the bottom surface of the housing is designed to be supported on a horizontal support surface. The computer housing has a configuration which enables a right-handed user to orient the housing in at least one orientation such that the upwardly facing side and end surfaces are located along the right side and upper or lower ends of the housing to enable the right-handed user to comfortably use the computer, and to enable a left-handed user to orient the housing in at least one other orientation such that the upwardly facing side and end surfaces are located along the left side and upper or lower ends of the housing to enable a left-handed user to easily grasp and utilize the computer. A switch enables the user to correctly align text, data and graphic information on the flat panel display with the particular orientation of the computer.