COMPUTER CABLES, ELECTRICAL CABLES, BATTERY CHARGERS, ELECTRICAL CIRCUIT BOARDS, PRINTED CIRCUIT BOARDS, ELECTRICAL CIRCUITS, COMPUTER BUFFERS, COMPUTER CHIPS, COMPUTER DISCS, COMPUTER PRINTERS, COMPUTER PROGRAMS, FOR USE IN THE FIELD OF COMMUNICATIONS BETWEEN COMPUTERS AND COMPUTER PERIPHERALS, CONVERTERS, MICRO-COMPUTERS, MODEMS, MULTIPLEXERS, ELECTRICAL POWER SUPPLIES, ELECTRIC SWITCHES