The first computers used switches and lights. Imagine you're playing a game with your friend where each of you has a flashlight. When you turn yours on, your friend knows it's their turn to do something. That’s like how early computers sent messages, they turned switches on and off in patterns.
Examples
- Turning on a flashlight for your friend is like sending a message in the dark.
- Flipping switches like a Morse code game with your classmates.
- Tapping out a message using light signals from one room to another.
See also
- How Did the Internet Begin?
- How Does a Smartphone Recognize Your Face?
- Why Do We Use Passwords for Security?
- Why Do We Get 'The Runs' on Planes?
- How Does a Fridge Keep Food Cool?
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Categories: Technology · Computers· History of Technology· Communication · Text is available under the Creative Commons Attribution-ShareAlike License.