ENIAC

ENIAC (Electronic Numerical Integrator and Computer), built in the 1940s, was one of the first fully electronic general-purpose computers. It used thousands of vacuum tubes to perform calculations quickly, replacing slower mechanical methods. ENIAC could solve complex math problems much faster than previous machines, making it a major step forward in computing technology. It was mainly used for scientific and military calculations, such as predicting missile trajectories. Its design demonstrated the potential of electronic digital computers, paving the way for modern computers we use today.