Chapter 1 - Introduction to the Personal Computer

Hello my friend! Today we learn together Chapter 1: Introduction to Personal Computer (PC) with simple explanation and video tutorials in khmer language! This is the introduction to computer essential. Hope you learning this lesson and get more knowledge from this! let enjoy it.

If you want to see all lessons list, check out All Chapters of Computer Fundamentals! Now let's get started!

1. What is Personal Computer (PC)?

A Personal Computer (PC) is a multi-purpose computer designed for one person use at home or office. PC is cheap price, easy for buy, and easy for operate!

2. Main Components of PC (Part 1)

Before build or use PC, we need to know main hardware parts inside computer box:

• Case : The outside box container for keep and protect all hardware components inside.
• Power Supply (PSU) : Converts electricity from house wall AC into low-voltage DC power for computer parts.
• Motherboard : The big main circuit board that connects CPU, RAM, hard disk, and all hardware together so they can talk to each other.

Watch Video Tutorial (Part 1)

3. CPU and Memory (Part 2)

• CPU (Central Processing Unit) : The main brain of computer! CPU processes all calculations, logic, and instructions.
• Memory (RAM & ROM) :
  • RAM : Temporary memory box. When you turn off PC power, data inside RAM disappear!
  • ROM : Permanent memory box. Keeps boot instructions even when computer turned off.

Watch Video Tutorial (Part 2)

4. Adapter Cards & Storage Devices (Part 3)

• Adapter Cards (Expansion Cards) : Plug into motherboard expansion slots to add extra function (like WiFi card, Sound card, or Graphic card).
• Storage Devices : Use for save your files, photos, videos permanently (Internal SSD, HDD, or External USB drive).

Watch Video Tutorial (Part 3)

5. Computer Ports (Part 4)

• Video Ports : Plug cable from computer to monitor screen (HDMI, DisplayPort, VGA).
• General Ports : Connect external devices to motherboard (USB ports, Audio jack, Ethernet LAN network port).

Watch Video Tutorial (Part 4)

6. Component Compatibility (Part 5)

When you choose computer parts for build PC, compatibility is super important!

For example, Motherboard socket must fit CPU model, Case size must fit Motherboard size, and RAM type (DDR4 or DDR5) must match Motherboard slot!

Watch Video Tutorial (Part 5)

💡 Want to learn more? Check full lesson index here: All Chapters of Computer Fundamentals!

Happy coding and learning PC hardware, my friend!