ENIAC
ENIAC was dedicated in 1946 at the University of Pennsylvania in Philadelphia. ENIAC (Electrical Numerical Integrator and Calculator) was among the first general computers. A marvel during its time, ENIAC was the size of a room. It used vacuum tubes, resistors, and transistors. Today a laptop can do all that the ENIAC could do. ENIAC was powered down October 2, 1955. Parts of ENIAC are with the Smithsonian and other institutions.