1What "remember" really means
Memory is just bits — and bits need something to hold them
You only need two ideas. Watch each one:
Everything is on/off bits
A note, a name, a photo — it's all tiny bits. Each bit is just on or off, a 1 or a 0. Put enough of them in a pattern and you've spelled something.
Something has to hold each bit
A bit can't float by itself. Some bits are held up by electricity flowing right now. Others are snapped into a physical state that stays on its own.
2Two kinds of memory
The thinking desk vs the locked drawer
A computer doesn't remember in one single way. It has two memories that work in opposite ways:
The thinking desk
Super fast — but it only holds a bit while electricity keeps pushing on it.
The locked drawer
Slower — but each bit clicks into a physical state that stays with no power at all.
3Your turn — write something to remember
Type a little note and watch both banks light up
Type a short word. The same note gets written into both memory banks at once — watch each one light up its bits to hold your pattern.
Working memory
Storage
4Now pull the plug
Your note is in both banks. What happens when the power dies? 🔌
Same note, both banks holding it. The big test: cut the power and watch. Guess first — then pull the plug.
Guess before you pull the plug
Before you pull the plug, predict: which kind of memory keeps your file, and which loses it?