Electric, electronic, optical, measuring, signaling, controlling and teaching apparatus and instruments, all for use with telecommunications, namely, apparatus for producing sound, images or data, namely, blank magnetic and optical data carriers, data processors and computers, namely, microcomputers, minicomputers, computer central processors, computer monitors, computer keyboards, computer terminals, computer interface boards, computer memories, computer laser printers, computer impact printers, computer dot matrix printers, computer operating systems, computers and instructional manuals sold as a unit, computer interface apparatus, namely, computer modems, computer mouse and mouse pad, computer peripherals and pans thereof; computer programs and databases for use in operating telecommunications and business management systems and related instruction manuals sold as a unit; computer programs, namely, financial accounting system software, communications software for connecting to global computer networks, network management software, computer proxy software for use with other software programs, computer programs and software for controlling access and alarm monitoring of homes, apartments, buildings and other properties, billing analysis software, and software for network access control and for creating and maintaining firewalls; computer programs for accessing a global computer network and interactive computer communications network; optical cables, optic filters, optical scanners, optical character readers, optical discs, optical fibers, optical glass for signal transmission, optic transmitters, optic receivers, optical signal processing apparatus, optic switches, optical attenuators, optical amplifiers, optical character recognition apparatus, and parts thereof; audio, video and data communications systems, namely, digital and analogue signal transmitters, receivers and converters, radio and telephone transmitters, receivers and servers, answering machines, telecommunication transmission, receiving and storage apparatus, namely, telecommunications transmitting sets, data transmitters, facsimile machines, remote controls and set-top units for television, cinematographic television and amusement equipment, namely, signal decoders, electrical wire, electrical wire connectors, integrated circuits, printed circuits, electric circuits, circuit breakers, printed circuit boards, electric circuit boards, circuit connectors, electrical controllers, electrical converters, electrical fuses, electric luminescent display panels, electrical switch plates, electric plugs, antennas, electrical cables, computer cables, computer chips, silicon chips, chronographs for use as specialized time recording apparatus, electric coils, computer buffers, blank computer discs, blank computer floppy disks, computer hard discs, electrical conductors, acoustic conduits, electrical conduits, fiber optic conduits and parts thereof; compact disc players, audio and video tape recorders, audio and video tape players, audio and video cassette recorders, audio and video cassette players, blank audio and video tapes, cassettes, discs and microfiche; audio and video tapes, cassettes, discs and microfiche featuring information concerning telecommunications, and concerning personal and business management systems; audio and video recordings in the field of telecommunications, information technology, safety; television and television peripheral equipment, namely cameras, set boxes, remote control units for interactive and non-interactive use; computer memory hardware, computer peripherals and modems; video monitors, automatic vending machines and timing mechanisms therefor, and parts thereof; machine readable, magnetically encoded cards, namely, prepaid telephone calling cards and credit cards; blank smart cards; data processors and readers, word processors, magnetic coded card readers, magnetic coded cards, namely, fidelity cards, electronic encryption units, lasers not for medical use, light emitting diodes, light emitting diode displays, microprocessors, blank data carriers, demagnetizers for magnetic tapes, and parts thereof; computer, data and video networking and conferencing equipment, namely, teleconferencing equipment and audiovisual teaching equipment in the nature of overhead film, photographic and slide projectors, projection screens, computer based information display equipment, namely, computers which display information on an overhead screen, intercoms; telephones, telephone answering machines, telephone transmitters, telephone wires, teleprinters, teletypewriters, and parts thereof, namely, caller identification boxes, dialing assemblies, telephone units, audio operated relays, audio operated relays, audio/video signal and optical filters, protectors and automatic signaling and control equipment, telemeters, wireless and cellular telephones, radio pagers, portable computer devices, namely laptops, handheld and pocket computers, facsimile transmitters and receivers, wireless fax machines, personal communications equipment, namely, personal digital assistants, calculators; satellite processors, satellites and satellite communication earth stations both stationary and moveable; audio and video recordings in the field of news, sports, entertainment, culture, business and finance, weather and travel; prerecorded compact discs, audio cassette tapes, video cassette tapes, digital audio tapes and digital video discs featuring musical, variety