computer software; namely, corporate databases in the field of conatruction; computer hardware including computers, computer networks, peripherals, monitors, word processors, data processors, modems, keyboards, computer memories, cables and interfaces; telephones; earpieces; namely, receivers including telephone receivers; telegraph receivers; telephone loudspeakers; telephone answering machines; telephone transmitters, microphones; radios; television sets; data storage mediums; namely, blank and pre-recorded video and magnetic tapes and disks; compact disc read-only memories; adding machines; calculators; photocopiers; tape recorders; telecommunication transmission cards; namely, modems; intercoms; display screens; slide projectors; optical key cards; optical key card readers; servers; namely, data servers and file servers; telecommunication networks; namely, network analyzers, network calculators, network control processors, network software, network terminals, digital networks, and telecommunication drivers; data communication networks comprising apparatus for storing data and terminals for accessing the apparatus to read out stored data; facsimile machines; teaching devices and instruments; namely, video recorders, and pre-recorded magnetic tapes, audio-video cassettes and software for educational and teaching use; and satellite antenna