Topic: Displays, Ports, Video Standards, and Troubleshooting (A+ Core 1 Section 10)**

Essential Question:

How do display technologies and video connectors affect compatibility, performance, and troubleshooting for modern systems?

🎯 Learning Intention

I will identify major display types and video connectors and explain how resolution, refresh rate, and cabling affect system output.

✅ Success Criteria

• I can compare HDMI, DisplayPort, USB-C, VGA, and DVI.
• I can explain resolution, refresh rate, and color depth.
• I can identify LCD, LED, OLED, TN, IPS, and VA panels.
• I can diagnose common display and port issues.

📚 Vocabulary (Students Copy)

LCD (Liquid Crystal Display) — Backlit panel using liquid crystals; most monitors.

LED (Light-Emitting Diode) — The backlight tech used in modern LCDs.

OLED — Self-lit pixels; deep blacks, high contrast.

Refresh Rate (Hz) — Times per second the display redraws the image.

Resolution — Number of horizontal × vertical pixels.

Aspect Ratio — Shape of the display (16:9, 21:9, etc.).

HDMI — Consumer audio-video connector; common on TVs and monitors.