CD-ROM players; floppy disk drivers; optical disk drivers; mouses; telephones; modems; telephone answering machines; fax machines; walkie-talkies; private branch exchangers (private automatic branch exchange); cordless telephones; cellular phones; video optical communication system comprising video sensor (camera) video signal processor system controller and optical transmission fiber; satellite communication system comprising satellite radio transponders which are carried by the satellite and comprise a solar battery, antennas, radio transmitter, receiver and processors, and ground stations which comprise antennas, transceiver, processor, I/O interface, a tracking system to keep track of the satellite position, and telemetry transceiver for the detection and tracking of a remote satellite; video conference equipment, namely, TV, camera, microphone, speakerphone and processor capable of processing images and voices; antennas; Global Positioning System (GPS), namely, GPS receivers; directional finding navigator; telephone dialers; pagers; automatic telephone dialers; FM signal generators; DAC/ADC, namely, digital signal to analog signal converter (DAC)/analog signal to digital signal converter (ADC); radio relay transceivers; coils, namely, radio frequency coils and coils for radio frequency transceivers