1979 R-5000W Microwave Oven with Microcomputer Sensor

Sharp developed the world's first microwave oven equipped with a microcomputer that automatically controlled food cooking.
Users thus got perfectly microwaved food every time thanks to a sensor that detected vaporized substances (odors, smoke, steam, etc.) and cooked the food accordingly.
This product started a new trend in microwave ovens; rather than simply setting a cooking time, users could now depend on the oven to do this for them and to automatically adjust the temperature, too.