How Does ENIAC: The First Computer Work?

ENIAC is like a giant robot made of tiny switches that can do math super fast.

Imagine you're playing with building blocks, each block represents a number or an operation. ENIAC uses electric signals flowing through wires to move these “blocks” around and solve problems, just like you would when counting or adding.

ENIAC doesn’t have memory like your phone, it has switches that can be on or off, like a lightbulb. Each switch is called a vacuum tube, and they work together to store numbers. If a vacuum tube is on, it might mean the number 1; if it’s off, it might mean the number 0. That's how ENIAC remembers what it needs to calculate.

To do math, ENIAC uses wires and switches like a puzzle. When you press a button (or send an electric signal), it moves numbers through wires to other parts of the machine that add or subtract them, just like how you might use a calculator.

ENIAC was huge, noisy, and used a lot of electricity, but it was super fast for its time, like the fastest kid in class who can solve math problems without even thinking!