Computer Science / Unit 5 CS 0258 short lesson, about 20 seconds
The Cache
Captions available
The idea
Cache memory is built from static RAM — very fast, expensive, small, volatile — sitting nearest the processor over the bus, and transparent to the programmer whose code it accelerates.
In practice
An app speeds up between runs with no code change; the cache was doing its quiet work.
Where people slip
Transparent means invisible, not irrelevant.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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