Data and binary
Bits and bytes: how big is a file?
Eight bits make a byte. Kilobyte, megabyte, gigabyte and terabyte are each a thousand times more. That way you know what fits on a USB stick.
Prior knowledge
Why
Your USB stick says 32 GB, your photo 4 MB, your film 2 GB. So how many photos fit on it, and is there still room for that film?
All those letters after the numbers tell you how big a file is. If you understand them, you can estimate what fits and how long a download takes.
It all starts with the bit: one 0 or one 1. A byte is a row of eight bits, enough for one letter.
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