Laptop professionals should have good reasoning and logical downside solving skills, be observant, alert to element and tenacious in pursuing problems to completion. Conceived by Harvard physics professor Howard Aiken, and designed and built by IBM, the Harvard Mark 1 is a room-sized, relay-primarily based calculator. The machine had a fifty-foot long camshaft running the size of machine that synchronized the machine’s thousands of component components and used 3,500 relays. The Mark 1 produced mathematical tables but was quickly superseded by digital saved-program computers.