Central processing units (CPU); Electronic motor vehicle ignition tuning kits comprised of an electronic control unit that monitors engine performances and delivers re-calculated sensor values to the original engine control unit to increase engine performance; Gas sensors for measuring gas concentration; Humidity sensor with integrated digital and analog output circuitry used in automotive, appliance and light industrial applications to sense both relative humidity and temperature environmental conditions; Microsensors for measurement of pressure, acceleration, force and flow, namely, silicon piezoresistive pressure sensors; Printed circuit boards; Printed circuit boards (PCBs); Printed electronic circuits for apparatus and cards bearing integrated circuits; Sensors and detector units for use in controlling the actuation and operation of automotive safety apparatus and equipment