1.4. Mainboard Components

Inside the computer, some components are directly embedded to the mainboard, and some are connected with a slot or wire. Here are the main components:

The processor runs the apps and controls everything that happens when the computer is on. It's the brains of computer. (A.k.a. CPU, Central Processing unit)
Memory holds data, like apps and files, while the computer is running. It's the working memory for a computer, and it gets empty when you turn the computer off. The processor runs applications by reading the application program from the memory and executing it. (A.k.a. RAM, Random-Access Memory)
Hard drive (HD) is the long-term memory of the computer. It keeps apps, pictures and other files in safe, when the computer is off.

Next: 1.5. Start-Up

1.3. Mainboard

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