Handheld computers; electronic calculators having the functions of telephone books, address books, calendars, schedule books and memo books; computer software pre-recorded on magnetic tapes,integrated circuit cards, compact discs, optical discs, for use in management of databases, for use as a spreadsheet and in computer search engines, for word processing, computer aided design (CAD), information retrieval, games and utilities; computers; computer peripherals; computer keyboards; printers for computer; monitors; computer mouses; scanners; light pens; optical disc drives; modems; personal digital assistants; electronic personal organizers; digital cameras; printers for digital cameras; computer software for a personal computer for use in achieving data exchange between a personal computer and a wrist watch or a digital camera; electronic calculators; electronic label printers; cellular telephones; radio pagers; LCD television sets; vehicle navigation system consisting of computer software featuring a database of map coordinates and locations, a global positioning satellite receiver, electrical cable and documentation all sold as a unit; radios; compact disc players; audio tape recorders; video tape recorders; multimedia video projectors for transmission or reproduction of images, sound and data; visual presenters, namely, apparatus for transmission or reproduction of images and sound; apparatus for recording, transmission or reproduction of sound or images; visual apparatus for scanning, processing,transmitting and projecting images and pictures