Computers; disk drives, computer printers, namely, laser printers and dot matrix printers; computer keyboards; blank magnetic disks for storing computer programs; blank magnetic computer tapes; pre-recorded compact disks featuring computer operating system programs; computer mouse; optical and laser scanners for conversion of data input into computer code; integrated circuit boards; television sets; audio speakers; microphones; video cameras; telephones; facsimile machines; radio frequency transmitters; computer and video monitors; computer network cards for controlling data transmission between a plurality of linked computers