07/08/1944 IBM dedicates the first program-controlled calculator
IBM's 100 year history and achievements [HD]
Thomas Watson Jr. Documentary - IBM Success Story
1944 IBM ASCC Automatic Sequence Controlled Calculator - Computer - Harvard Mark I
The History of IBM: the Personal Computer to Watson
An American technological company started designing the SSEC, an electromechanical calculator that was able to treat instructions as data. It provided great publicity for the company. It used roughly 12,500 vacuum tubes, 8 registers with an access time of less than 1ms, 150 low-speed registers and 21,400 relays for control.