Recordable and rewritable CD ROMs; CD ROM drives; DVD drives; scanners for a personal computer; keyboards for a personal computer; printed circuit cards for a personal computer which generate digital audio signals; modems; multi- media speakers for a personal computer; mice for a personal computer; video conferencing kits for a personal computer comprising a video camera, a modem and computer software; multi- media kits for a personal computer comprising CD ROM drives, speakers, printed circu...