The computer or information technology(IT) industry is the range of businesses involved in designing computer hardware and computer networking infrastructures, developing computer software, manufacturing computer components, and providing information technology (IT) services. The electronics sector produces electronic equipment for industries and consumer electronics products, such as mobile devices, televisions and circuit boards. Industries within electronics include telecommunications, equipment, electronic components, industrial electronics and consumer electronics. Electronics companies may produce electrical equipment, manufacture electrical components and sell items at retail to make their products available for consumers. The electronics industry has now become a global industry worth billions of dollars. Contemporary society uses all manner of electronic devices built in automated or semi-automated factories operated by the industry. Products are assembled from integrated circuits, principally by photolithography of printed circuit boards. Computers are most essential for all type of business. Small retailers, traders, doctors, hospitals, call centres, even nowadays vegetable shops like wholesale, reliance-fresh need computers to maintain inventory, credit/debit card payments, billing, maintaining customer database, appointments, and customer’s history/cases. Some of institutions have large number of computers operating under various departments like accounts, inventory, billing, marketing etc. Schools and colleges have separate labs having hundreds of computers operating at same time