9 Electric, electronic, optical, measuring, signaling, controlling and teaching apparatus and instruments, namely magnetic, electric and optical networks comprising data transmitters and related equipment that transfers data between data terminals; audio and data communications equipment, namely digital and analog signal transmitters, receivers and converters, and radio and telephone transmitters and receivers, and communications servers; electronic mail hardware for electronic exchange of data and messages; automatic vending machines and mechanism for coin operated apparatus; data processing equipment, namely microcomputers, minicomputers, computer monitors, computer terminals, computer interface boards, computer printers, computer peripherals and parts thereof sold therewith, computer memories, computer operating systems, computer modems, and computers; audio and video tape and cassette recorders