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- intruder alarm - a combination of infra-red and electronics technologies
- solid state relay
- PL 301 loudspeaker - a loudspeaker for music lovers
- high resolution colour graphics card (part 1) - the first in a series of articles describing a 512 x 12 or 12 x 256 pixel, black & white or colour graphics card, complete with software
- frequency standard
- cleaning video recorders
- RS 232 interface - serial transfer via the universal 1/0 bus