Abstract: One embodiment of the present invention provides a portable computing device comprising a housing including a keyboard. The embodiment also includes a first pointing device coupled to the housing, as well as a second pointing device coupled to the housing between the keyboard and a first edge of the housing. The embodiment additionally includes a plurality of buttons disposed on the housing so that at least one button is located between the first pointing device and the second pointing device, and at least one button is located between the glide point and the first edge of the housing. In another embodiment, the plurality of buttons is movably disposed on the housing so that when buttons are located in a first position, at least one button is located between the first pointing device and the second pointing device, and when buttons are located in a second position, at least one button is located between the second pointing device and the first edge of the housing.

Abstract: A landing gear warning system for an aircraft with at least one retractable landing gear member comprising: (a) a landing gear indicator adapted for generating a signal representative of the position of the landing gear member; (b) an aircraft positioning system adapted for generating a signal representative of the aircraft's latitude, longitude, and elevation; (c) a pilot warning device; and (d) a computer system operatively coupled to the landing gear indicator, the aircraft positioning system, and the pilot warning device, wherein the computer system includes a database that contains the longitude and latitude, and elevation of a plurality of runways, and wherein the computer system is adapted for receiving the signal representative of the aircraft's latitude, longitude, and elevation, adapted for receiving the signal representative of the position of the landing gear member, and adapted for generating a pilot warning signal that activates the pilot warning device if the aircraft's elevation is less than a