What you are about to encounter is the timeline of the computer:
1939-The fist computer product was a HP 200A Audio Oscilliator.
Walt Disney used the 200B model,they were used as sound effects in his movies in the early 1940s
1940-The Complex Number Calculator (CNC)- Completed in 1939 , but demonstrated at a maths conference by the Designer of the computer George Stibitz.
1941-The Zuse Z3 Computer:The Creator was Konrad Zuse a german engineer,his invention is currently in the Deutsches Museum in Munich.
1942-The Atanasoff-Berry Computer (ABC)
1944-The Harvard mark 1 devised by Harvard professor Howard Aiken, and designed and built by IBM, the Harvard Mark-1 was a room-sized, relay-based calculator.
