Complex devices could have simple electronic representations of Boolean logic functions. Calculators, digital watches, cellphones, laptops, and computers are a number of the important devices that we use in our day by day lives. Apart from these gadgets, we use home equipment like tv, refrigerators, air conditioners, micro ovens, mixers, blenders, grinders, and many more. These units or appliances operate upon the availability of electrical energy. Electricity is an essential part of life, and is amongst the most widely used forms of energy.