[ ELECTRIC AND ELECTRONIC APPARATUS FOR USE ON AIRCRAFT AIMED AT CONTROLLING AND MONITORING CABIN LIGHTING, COCKPIT AND CABIN ANNOUNCEMENTS, NON-SMOKING AND FASTEN-SEAT-BELT SIGNS, LAVATORY SMOKE WARNING, QUANTITY INDICATION OF WATER AND WASTE TANKS, CABIN TEMPERATURE CONTROL, AND VACUUM TOILETS; ELECTRIC AND ELECTRONIC APPARATUS FOR THE TRANSMISSION OF DATA FROM THE AIRCRAFT'S COMMUNICATION SYSTEM TO PASSENGERS' MOBILE COMPUTERS; ELECTRIC AND ELECTRONIC APPARATUS FOR MEASURING THE FLOW OF DA...