Food engineering, which became an academic discipline in the 1950s, is a professionaland scientific multidisciplinary field related to food manufacturing that covers the practical applications of food science. The purpose of this evolving field is to advancethe implementation of efficient industrial processing in the transformation of rawmaterials of biological origin into edible forms, which includes packaging, storage, anddistribution. Food engineers are employed in academia by government and industry andas private consultants to assess the problems concerning food production, food quality,process and plant design, and food regulation. They conduct research and develop unitoperations such as sterilization, irradiation, concentration, extrusion, and freezing.Ancient activities like milling, dehydration, and fermentation have been transformedthrough the increasing demand of food supply systems into automatic instalments.Electronics play very important role for automation in food industry. Automated systems in food production come in different functions and sizes, very much depending on the food type and specific requirements of the manufacturers. This paper gives the idea about the role of electronics in food industry. Food industry is dependent upon manual handling, in a wide range of activities. That is largely because of the features of the food products are variable: such as vegetables, fruits, meat, seafood etc. these food products can be divided into very good, good or bad categories on individual unit basis.