The electric current isn’t actually doing anything special in a computer, you can make computers out of physically moving objects as well like cogs (which Charles Babbage famously designed), marbles, or even dominos!
[This explanation of a domino computer](https://www.youtube.com/watch?v=lNuPy-r1GuQ) might help understand what’s going on inside an electronic comptuer as you can imagine the movement of the dominos like an electric current.
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