Electronics > Beginners
Why binary is represented by two bits 0 and 1 and not three bits?
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paulca:

--- Quote ---Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".

--- End quote ---

As a paraglider pilot from a windy country, the bigger the span the more likely you'll be dragged like a rag doll up the hill :)  Kite surfers tell me they have a 9m2 wing... mine is 29m2 and in a 15mph wind, in it's power zone will pull a family car.
tggzzz:

--- Quote from: Syntax Error on October 28, 2019, 09:56:17 am ---

--- Quote from: tggzzz on October 28, 2019, 08:24:51 am ---Not true.
...
I can't be bothered to point out the flaws in your other points.

--- End quote ---

In binary logic the door has an exclusive true state for IsClosing or IsOpening and then, a true state for IsClosed or IsOpen. And only if HasFailed is false (not true). You might need to know the open angle, but that's not a state, it's a property.

--- End quote ---

False, in every respect.

Your FSM might have that and the states might be encoded in that way, and such an FSM might work in your case. But that's all.

You should start by understanding the various at the low-level techniques used to implement the state in an FSM, e.g. https://www.allaboutcircuits.com/technical-articles/encoding-the-states-of-a-finite-state-machine-vhdl/

You should continue by understanding the concepts of how to design and express FSMs in a technology independent way. Clearly FSMs can be implemented in hardware, software or frequently in a combination of the two. Harel's StateCharts have become popular in the last 30 years http://www.inf.ed.ac.uk/teaching/courses/seoc/2005_2006/resources/statecharts.pdf but there are many other formalisms.
BrianHG:

--- Quote from: Vtile on October 27, 2019, 11:07:45 pm ---Why binary not ternary.. I suppose one interesting reason is that all widely used number systems are even based, 2,8,10,16,60.

--- End quote ---
That's only after the invention of '0'.
tggzzz:

--- Quote from: paulca on October 28, 2019, 10:05:49 am ---
--- Quote ---Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".

--- End quote ---

As a paraglider pilot from a windy country, the bigger the span the more likely you'll be dragged like a rag doll up the hill :)  Kite surfers tell me they have a 9m2 wing... mine is 29m2 and in a 15mph wind, in it's power zone will pull a family car.

--- End quote ---

Yeah, but you can't go at 150kt, nor up to 37k ft (intentionally at least!), and there is the noticable possibility that the oversized handkerchief might collapse. Me biassed? Shurely shome mishtake.

(In the absence of hills, I was towed aloft under a 'chute behind a car on an airfield a couple of times, and have landed in a light aircraft 1/7 of the times I took off in one :) )
paulca:

--- Quote from: tggzzz on October 28, 2019, 10:19:11 am ---
--- Quote from: paulca on October 28, 2019, 10:05:49 am ---
--- Quote ---Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".

--- End quote ---

As a paraglider pilot from a windy country, the bigger the span the more likely you'll be dragged like a rag doll up the hill :)  Kite surfers tell me they have a 9m2 wing... mine is 29m2 and in a 15mph wind, in it's power zone will pull a family car.

--- End quote ---

Yeah, but you can't go at 150kt, nor up to 37k ft (intentionally at least!), and there is the noticable possibility that the oversized handkerchief might collapse. Me biassed? Shurely shome mishtake.

(In the absence of hills, I was towed aloft under a 'chute behind a car on an airfield a couple of times, and have landed in a light aircraft 1/7 of the times I took off in one :) )

--- End quote ---

LOL.  Unfortunately paraglider pilots have found themselves up there before.  Found unconscious, hypoxic and covered in hail storm bruises, but alive.

I suppose the only advantage I have is that I can carry my glider to the top of the hill and launch and don't need a trailer to get it out of a farmers field :P  Who needs to go faster than 25knots anyway, it's much easier staying in small thermals when you can orbit inside 10 meters :)
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