In 1950, there were just a handful or less of electronic computers in the world, all filling large rooms. Seventy years later, there are billions (if not trillions) of electronic computing devices. Please listfour jobs or processes that were in existence in 1950, that are now (almost) completely done by computer, e.g., automated telephone switches in 1950 were all built with stepping motors, rotating arms, and electro-mechanical relays, and long distance routing was done by human operatorstoday telephone switching and routing is all done by computers.