A computer has a display, keyboard and two main component parts. The components each have an L-shape and are linked together to enable sliding movement in substantially one plane in a first direction. The linkage also enables movement orthogonally with respect to the first direction in another plane, such that the components transition from a closed position of the computer in which the components interfit together to form a first right rectangular prism and in which the display is exposed, to an open position having a second right rectangular prism shape in which the keyboard is exposed adjacent to and in the same plane as the display.