The present invention relates to an aircraft, missile, projectile, or underwater vehicle with an improved control system and an improved control system for maneuvering an aircraft, missile, projectile, or underwater vehicle. The present invention may provide constant power consumption and brightness even at high temperature by supplying an appropriate power supply voltage that corresponds to the temperature. The HTML document handling portion is operative to communicate through a proxy server, with a home HTTP server in the intranet or the foreign servers in the wide area network. Moreover, during the given time slot, the photosensor logically assigned thereto is operably coupled to signal processing circuitry that performs bar code detection operations on the data signals derived therefrom while the other photosensor is operably decoupled from such signal processing circuitry.