Computer:-computer is a machine that manipulates data according to a list of instructions. Computers can be found in various forms such as personal computers, calculators and mobile phones. They are utilised in places like houses, offices, and schools. The invention of computer symbolises the advancement of technology in mankind. Furthermore, computer has made our life easier. We would not have achieved what we have today if computer was not invented.
TV:-a system for converting visual images (with sound) into electrical signals, transmitting them by radio or other means, and displaying them electronically on a screen.