Not And Or and Xor gate

On binary and electricity

binary means of two states. electricity can flow or not. current can be on or off. current on represents true. current off represents false. or current on represents 1 and current off represents 0. it could have been apple and pears

The Transistor as foundation

a …

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Division by substraction

On the inexistance of multiplication and division as primary operations

computers can’t multiply. they add or substract e.g. let us divide 10/3 by using substraction. we’ll deduce 3 from 10 on and on

10/3 is 3 1/3

count      step
7           +1
4           +1 …
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