Which was the first mass-produced computer?
In the early years of computing, computers were either one-off machines or produced in very low numbers due to their high costs and specialized construction techniques. That approach changed with the 1953 introduction of the IBM 650 computer system. The computer was officially known as the IBM 650 Magnetic Drum Data-Processing Machine and the base unit had a physical footprint about the size of a deep refrigerator. Almost 2,000 systems were produced, the last in 1962.