Matheuskpds
commented
1 year ago Boolean algebra? That's not electronic, that's pure math and logic. It can just be and commonly is implemented with electronic circuits, but you can just as well make a logical AND gate with mechanical elements, whether they are cogwheels, or valves with flowing water or air pressure.
In Boolean algebra, there are variables that are either true or false. Statements can be constructed to be true or false, such as is it day or night, does it rain, or is it cloudy.
However, as you already might have seen, just like in electronics, there is always a gray area between day and night, where given a bunch of people they will not all agree on the exact moment when day turns into night or vice versa.
Which means, even electronic circuits are not strictly digital in as even digital logic is implemented by using analog components and circuits.
The terms digital and electronic are often used interchangeably but I know that it's not correct because something can be digital but not electronic.
Something can be digital in the sense that it's discrete both in time and magnitude. A picture of a ruler appearing each second is discrete in time because this timing is countable and it's also discrete in value/amplitude/magnitude because it is splitted into countable (in this case, two or more) parts. A picture like that is likely to be electronic or displayed on an electronic device.
What would be an example of something digital which isn't electronic? The ruler itself (given all times it appeared in the minds of people)?