Power plants create electricity. Electricity flows from them into substations and power lines, and then it flows into any place that needs electricity, like a library, school, or house. Electricians put wires in the walls of buildings, so the electricity flows through those wires into an outlet.
Once the electricity gets to an outlet, if there’s nothing plugged into it, it will just keep flowing to the other places. But if you plug a charging cord into it, then it can flow down the plug and into your computer. The electricity flows into a battery hidden inside your computer, and the battery holds the electricity there.
When you use your computer, the electricity flows out of the battery and into the circuits of the computer. The circuits on a computer are full of teeny, tiny switches and components. When you move your finger on the touchpad and press keys on the keyboard, you’re causing those teeny tiny switches to turn on and off. When the switches are on, the electricity can flow through them, and when they are off, electricity can’t flow through them.
Computer components are really good at detecting if there is or isn’t electricity flowing. If electricity is flowing, that’s a 1. If it’s not, that’s a 0. This is the binary code that controls what computers do.
Do you want to do a job that helps make computers work? There are a lot of important jobs for that. Here are a few examples:
Eddabear 