Hard Drives

Behold the power of magnets

Basically you have "disc platters" that record information and a complex "arm" that hovers over those platters reading the information they contain.  The information is stored in a ridiculous amount of little tracks that are created in a spiral

I recently broke down and purchased an external hard drive.  It was this attached beauty that I got from the apple store.  For the amount of information it holds, I feel that it is reasonably priced

CDs/DVDs

Slowly become old school

Crazy lasers read (or make) bumps and grooves that represent data (1s or 0s).

Much cheaper because they are on their way out

Flash Storage

I can't even

This works by the power of wizardry.  I know that it has something to do with electrical currents, but even the simplified explanations were way over my head.

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