Eli5: What is the real difference between analog and digital?

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I tried looking it up, and my brain just wasn’t making sense of it, but I haven’t had coffee yet so.

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Anonymous 0 Comments

Digital means discrete values. Analogue is continuous.

So consider a chess board. Each piece can be on a specific square. You can’t move a pawn 90% of a square. You have to move it whole squares. That’s how digital things work.

In snooker, the balls can be anywhere. You can put a ball half way along the table, or move it to a position half way between the centre and the edge. Or half way between that point and the edge, or 72.5% of the distance from a pocket. That’s how analogue things work.

Now, a lot of digital things have a lot more possible positions. A CD is digital. Each second of audio on each channel is made up of 44,000 numbers from 0-65536, each representing a 44000th of a second. A record is analogue. The grooves aren’t tied to any discrete time or distance.

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