STATE: What is happening in this step?
Yellow: What do you think those black dots are representing on the cd/dvd?
Match These Up
DVD
CD
Blu-Ray
ROM
Hard Disk Drive
USB
Solid State Drive
RAM
SD Card
Primary Storage
Magnetic Storage (Secondary)
Solid State Storage (Secondary)
Optical Storage (Secondary)
Blue: There is a difference between the red laser and the blue laser and the dots. How does this impact the CD/DVD?
Purple: The Red Laser is used for saving data to a CD/DVD. The Blue laser is used for a different optical device. What device do you think uses a blue laser?
Describe what is happening in the image at step 2
How would the sensor know whether it is a land or pit?