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personal digital assistants and portable devices for reading, converting, storing and transmitting data on optical storage media and capable of interfacing with a computer, wherein the portable device includes a memory card reader and writer, a printer host, and an audio data writer and player; blank and formatted floppy discs for computers; computer disc drives; head cleaning discs for disc drives; computer tapes; computer tape cartridges; sponges for securing the end of a computer tape in a tape cartridge; computer tape reels; computer tape reel collars for allowing self-threading of the tape into a tape drive; computer tape drives; re-writable optical discs; optical scanners; pre-recorded optical discs; optical disc drives; blank video and audio cassettes; head cleaning tapes for computer tape drives; holders for computer discs, tapes and tape cartridges; computer printers; computers; fiber optic cables; graphics controller boards; computer keyboards; modems; computer software namely for data storage, computer virus detection, data transport and communications, data archiving, data imaging (commercial graphics; color printing, and image transmission), and computer software for use with portable computer systems or personal digital assistants for recording information (digital and audio) and downloading to compatible computer systems