1. CS101
Computer Graphics

2. It’s just a bunch of pixels
A computer screen is made up of many small colored squares called pixels
The human eye blends the pixels together to form images on the screen.

3. Resolution Resolution = the number of pixels on a screen
Resolutions are expressed in pixels across the screen by pixels down the screen.
16:10 resolutions (Widescreen Computers)
1280 x 800 = WXGA
1440 x 900 = WXGA+
1680 x 1050 = WSXGA+
1920 x 1200 = WUXGA
4096×2304 = Retina 4K Display
5120×2880 = Retina 5K Display
16:9 resolutions (Widescreen TV’s)
1280 X 720
HD 1920 X 1080
4K 3840 x 2160

4. Why change resolutions?
Changing resolutions can improve productivity and decrease eye strain
Low Resolutions = Individual items appear larger but have less work space
High Resolutions = Individual items appear smaller but have more work space

5. How do I view my computer’s graphics ability?
Windows
Right click on the desktop and select “Display Settings” > Advanced Display Settings > Display Adapter Properties
Macintosh
Apple menu > About This Mac > Displays

6. How do computers make graphics?
Two ways:
Integrated Graphics
Dedicated Graphics

7. Integrated graphics Built into the motherboard.
Uses system processor and RAM to generate graphics.
Cheaper way to do graphics
Slower graphics ability
OK if doing low intensity graphic applications such as:
Word processing
Web surfing
etc

8. Dedicated Graphics
A graphics card is added to the computer which contains its own processor and RAM (this frees up the computer processor and RAM)
Really helps graphic intense applications such as video games, CAD, video editing, etc.
Best Graphics

9. Why is computer color RGB?
How come computers mix red, green, and blue to make all other colors?
RBY is mixed to make all colors when using reflective light (things that do not produce their own light)
RBG is mixed to make all colors when using additive light (things that do produce their own light)