Computer Science / Unit 5 CS 0260 short lesson, about 20 seconds
"Memory Keeps It When the Power Dies"
Captions available
The idea
Memory is volatile — cache and main memory lose their contents without power, and anything meant to survive shutdown must reach storage, a different layer with a different contract.
In practice
Work living only in an open unsaved window is one outage from gone.
Where people slip
The hierarchy's upper floors forget by design.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Something wrong in this lesson? Flag it · Sources for Computer Science