The ENIAC (Electronic Numerical Integrator and Computer) was the world's first computer. Developed in the University of Pennsylvania, the ENIAC is the base of our knowledge of computers as we know them. It used wires instead of circuit boards and vacuum tubes instead of transistors. The total cost of the computer was a massive $487,000 ($6,867,000 today counting for inflation.) The modular computer was monstrous, taking up roughly 1,800 ft2 and weighing in at 27 tons. Containing about 5,000,000 hand-soldered joints, this beast was just the beginning of the long history of computers.