How Did the First Computers Work Without Electricity?

The first computers were like big machines with gears and levers. People turned cranks or moved parts to make them work, just like a giant clock. They helped do math problems, no electricity needed!

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A mechanical computer is like turning a giant clock with numbers on it to add two numbers together.
Imagine a machine that uses wheels and levers instead of buttons and screens to do math problems.
You could turn a handle on the side, and gears inside would count up to give you an answer.

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Categories: Technology · Computers,History of Technology,Mechanical Engineering