Abstract: A computer pointing device including: a base portion with a lower surface adapted for sliding across a work surface, a spine portion, projecting substantially upward from said base portion and having a thumb-engaging surface on a first lateral side of the spine and at least fingertip-engaging surface on a second lateral side of the spine opposing said first lateral side. A keyboard with an altered arrangement of function of keys, such as an enlarged or truncated appearance in accordance with keys being re-mapped to sensors on a pointing device. A keyboard with a virtual screen display, which may be made semi-transparent by activating a sensor on a pointing device. A computer with a recess capable of accommodating a mouse device. A locked scrolling or zooming means, using any pointing device, in which scrolling or zooming in a defined direction is proportional to the distance travelled by the device, irrespective of direction of movement of the device.