New answers tagged terminology
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What would be an example of something digital which isn't electronic?
To return to the original question, the simplest thing that is not electronic, and digital, would be the die we roll in games, or the coil we flip. Statistically, if the object has n faces, we would ...
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What would be an example of something digital which isn't electronic?
Strictly speaking, the Bombes of Bletchly Park were electromechanical rather than being electronic, and were about as complex digital technology got before electronics.
The bombe was an electro-...
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What would be an example of something digital which isn't electronic?
Perhaps the nearest mechanical equivalent to electronic logic would Fluidics. This is basically hydraulic logic, with no moving parts beyond the fluid itself. The Coanda effect is used to make ...
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What would be an example of something digital which isn't electronic?
The alphabet. Any of them.
Formalized to the point of being "digital" many centuries before electronics ever existed.
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What would be an example of something digital which isn't electronic?
A telegraph. It is considered as the first digital device, and was so named in 1837. Digital because a finger, or digit, was used to communicate.
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What would be an example of something digital which isn't electronic?
Similar to mechanical calculators mentioned in another answer, the idea has been taken to the extreme to make entire programmable mechanical computers. See my own question on Retrocomputing.SE. To ...
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What would be an example of something digital which isn't electronic?
Digital hydraulics. In contrast to classical hydraulic valves, that are proportional ("analog"), digital hydraulics uses a number of on/off valves in parallel to control the flow of ...
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What would be an example of something digital which isn't electronic?
The word digital literally comes from the Latin "digitus" meaning a finger or toe, which eventually entered English with both literal and figurative uses. By the 14th century, the word "...
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What would be an example of something digital which isn't electronic?
Steve Mould on YouTube built a water computer using siphons that does simple binary addition: Water computer (YouTube)
There's a game called Turing Tumble (Wikipedia) that is a mechanical computer ...
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What would be an example of something digital which isn't electronic?
A scoreboard flipper (or whatever it's called) immediately came to my mind:
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What would be an example of something digital which isn't electronic?
The difference engine and a number of other pre-electronic mechanical calculators are probably the closest to what we consider nowadays digital. And they are, well, pre-electronic.
A mechanical ...
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What would be an example of something digital which isn't electronic?
digital in the sense that it's discrete both in time and magnitude
A gravity swing pendulum clock divides up time in discrete intervals. Through a set of gears the pendulum clock is able to rotate ...
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What would be an example of something digital which isn't electronic?
Counting with my fingers.
Also when I was a kid in the '60s, all of the adding machines and cash registers were digital and mechanical.
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What would be an example of something digital which isn't electronic?
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 ...
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Is it true that the “DFT can only deal with causal signals"?
I cannot speak for the source, but with much due clarification, it's correct in an important sense: "DFT is a sampling of DTFT" assumes we're taking $\texttt{DFT}$ of $x[n]$, where $x[n] \...
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What is the symbol for angular frequency?
Authors of signal processing books usually don't write about resistance, so the symbol $\Omega$ can be used for other purposes. One common purpose is to denote angular frequency in continuous time. In ...
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