The Electronic Numerical Integrator and Computer (ENIAC) introduced in 1946 was arguably the beginning of the modern digital age. It was the first computer that could be reprogrammed to perform different functions. Reprogramming the ENIAC was not a simple task. The programmers had to have a detailed knowledge of the computer’s design and inner construction. ENIAC required lots of hands on intervention. It had more than 17,000 (!) vacuum tubes, many relays and miles of wiring.