Abstract: In an oven calibration system, a value is stored corresponding to a predetermined temperature, and a calibration value is also stored corresponding to an offset. The calibration value is variable. A temperature sensor produces an output that is compared with a predetermined combination of the stored values. The calibration value may include a fixed increment and a variable multiplier for combination with the fixed increment.

Abstract: A microwave oven with a microprocessor control which contains stored recipe information. The user enters food type, quantity to be cooked, and size or doneness desired. Data for cooking a large number of different foods may be stored. The specific food item to be cooked is user selected by touching and holding one of ten food category pads. Food items within the category selected then "scroll" through an alphanumeric display. The item shown in the display when the food pad is released is the one selected for cooking. Following food selection, the user is prompted, via the alphanumeric display, to enter such additional data as quantity, size and doneness desired.