Electronic equipment Automobiles 60 Motor vehicles 44 Electric equipment 19 Airplanes 13 Maintenance and repair 13 Automotive computers 10 Control systems 9 Motors 9 Design and construction 7 Automatic control 6 Avionics 6 Equipment and supplies 6 Space vehicles 6 Testing 6 Automotive sensors 5 Technological innovations 5 Automatic test equipment 4 Integrated vehicle health management 4 Microelectronics 4 Motor vehicle fleets 4 Reliability 4 Automotive telematics 3 Detectors 3 Digital techniques 3 History 3 Microprocessors 3 Power trains 3 Programmable controllers 3 Safety appliances 3