What is a bit?
The smallest unit of ordinary information: a 0 or a 1.
Every file, photo and message on a computer is stored as bits. A light switch is a fair picture of one: it is off or on, and you can look at it as often as you like without changing it.
Eight bits make a byte, enough to store one letter of text. A phone photo takes around 20 million bits.
In the lessonsSee it in a simulation
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