<Dd> IBM hires its first black salesman, 18 years before the Civil Rights Act of 1964 . </Dd> <Dt> 1948: IBM SSEC </Dt> <Dd> IBM's first large - scale digital calculating machine, the Selective Sequence Electronic Calculator, is announced . The SSEC is the first computer that can modify a stored program, and featured 12,000 vacuum tubes and 21,000 electromechanical relays . </Dd> <Dt> 1950s: Space exploration </Dt>

What was the name of the first ibm computer