Abstract: A portable computing device with a microcomputer, a first display, a magnifying optical element through which the first display is viewed to provide a user with an enlarged virtual display, a first input device to communicate with the first display, a second direct display, and a second input device that can be a keyboard such that the second display can interact with the keyboard to display alphanumeric and other symbols so the user can see what is being typed. The second display is directly viewed and is configured to display the same data being entered in the selected field of the first display. Typically, the first display is a liquid crystal color display, capable of displaying a full range of text and graphic images such as can displayed on a conventional computer monitor. A virtual image of the first display is viewed by holding the lens close to an eye. To a user, the virtual image appears as large a real display provided on a conventional desktop or laptop.

Abstract: A joystick having a casing, a pair of gimbal plates mounted in the casing each slidable orthogonally with respect to the other and a pair of transducers, a control member of each coupled to a corresponding gimbal plate. A handle is coupled to the casing having a gimbal actuating sphere engaging each of the gimbal plates with the handle being universally pivotal throughout a portion of a spherical arc whose center lies intermediate the actuating sphere and an opposite end of the handle. Movement of the handle results in corresponding movement of the gimbal plates by an amount proportional to the component of displacement of the handle along the direction of movement of each of the gimbal plates. Each gimbal plate is biased so that it is urged towards a neutral position in the event of displacement on either side of the neutral position. External contacts are coupled to the transducers to allow the joystick to the electrically coupled to an external electrical line.