Electricity in motion.

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1946 Deployment Signals & electronics

ENIAC establishes large-scale electronic computing

J. Presper Eckert · John Mauchly · Moore School engineering team · ENIAC programmers

When we knew

Timeline date1946

J. Presper Eckert, John Mauchly, and the Moore School team put ENIAC into operation, demonstrating the practicality of large-scale electronic digital computation.

Why it mattered

It proved that thousands of electronic switching elements could cooperate in a practical high-speed computer.

What came before

Programmable relay machines worked but were limited by mechanical switching speed.

What came after

Stored-program computers, digital control, simulation, and the modern computing industry followed.

Memory anchor

Vacuum tubes turned calculation speed into an electrical systems problem.