jdnewmil

Wordle 1,179 4/6

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Connections

Puzzle #457

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Published in the Journal of Improbable Research?

I didn't say it was unobtainable. But it might look/behave quite different than the tools you are currently using.

As for Microsoft Exchange, I only use that for work, and my employer would not allow me to connect from my personal machine anyway. I am not saying that you that you have to give up your favorite tools... but I am saying that it you are putting up so many fences then you might as well stay with what you have.

No.

If you ever so carefully paint yourself into a corner then the corner is where you will be stuck. How badly do you want out of your corner?

There are FOSS and SAAS options that could work if you wanted them to... but whether they will depends on you.

Meat eaters trying to become vegetarian for ethical reasons often fail because the "un-meat" options out there don't meet their standards. Success almost always requires some letting go and re-adjusting. If you are not open to that then don't force yourself to put up with something you don't really want.

You are being obtuse. Fiber and cable and DSL are not "ethernet standards" and Ethernet is not used for last mile connections. Re-read the excellent explanation.

knowledge takes you past hand to mouth living on the edge and creates the opportunity for spare time with which to ask silly questions.

Did anyone who up upvoted this actually follow the link and look at the script? This is a troll.

I will just say that I think mermaid is great. I use it via the DiagrammeR package in R and via Quarto. In addition to manually typing in diagrams I sometimes write ad-hoc code that helps me visualize my data (and source code) by emitting one of the relevant mermaid syntaxes.

I see discussion under blocked individuals using Connections. Maybe related to the client?

I know, I am just someone on the Internet, but I was acquainted with someone who fasted for 40 days... twice (a little over a year apart I think)... in pursuit of some kind of spiritual enlightenment. He started out a little on the heavy side, and ended up, well, emaciated. Anyway, he did have water, which is where I think this woman's story falls apart.

Resistance is like shocks on a car... push hard to compress and it compresses faster. push less hard (voltage) and it doesn't move as fast (current). Pull it (negative voltage) and it expands (current flowing the other way). Resistors resist (voltage against) flow (current).

Capacitors you sorta seem to get: current flowing in one direction through a capacitor builds up voltage the remains after the current stops... like the force in a spring builds up as it compresses and when the motion stops the force is still there.

What you seem to confuse with resistance is inductance, where the force (voltage) on an air hockey puck makes it speed up (current flow), and when the force stops pushing it it just keeps moving (current keeps flowing).

The general term for these voltage-current relationships is impedance, because in the general case where voltage or current is oscillating or rapidly switching on and off you get some effects that resemble resistance (voltage pushing back on current or vice versa).

Final concept is that any time you have something trying to force specific levels of current or voltage on a pin, the "setter" (whatever is doing the forcing, typically referred to as the "source") has impedance and so does the "getter" (whatever is being forced, referred to as the "load"). If you have a fishing rod and you want the tip to move slowly, you can easily move it where you want it to go, but if you want to shake it fast it won't move as far (the weight of the tip is like inductance resisting the motion with force/voltage).

So, a microchip pin might have high resistance to ground but also high capacitance to ground... and a quick pulse of voltage will immediately cause current to flow into the empty capacitor, and if the capacitance is big enough the voltage won't change much, or will require more time to change. High capacitance has low impedance... it sucks up any available current as the desired change in voltage happens. interestingly, there are two options for making the pin voltage change faster... increase the current level being used by the source (by reducing impedance within the source so it can get out to the pin easier), or reducing the amount of current required to change the pin voltage by raising the impedance to ground inside the chip package (that is, reducing the capacitance inside the chip package).

When the source impedance is very very large, that is like having the signal generator probe laying on the bench instead of connected to the pin. When the source impedance is large and the internal pin impedance is large, then any stray electric or magnetic fields can push the pin voltage around easily. This is what they call floating... and if the microchip is reacting to those erratic voltage signals then the circuit as a whole will behave erratically as it tries to react to noisy input.

An output pin usually (but not always) has a lower source impedance than a tri-state input in its high impedance state. If you connect it to a floating input then the input stops floating and follows whatever the source is forcing it to.

An input pin usually has an input impedance similar to the source impedance of sources connected to it... this generally allows the input to be controlled most quickly. Inputs whose voltage doesn't change quickly tend to be less useful than ones the do change quickly bandwidth and clock speeds can be faster.

If you try to connect microchips built with different technologies together (e.g. CMOS vs TTL) then they may not communicate quickly or with minimal wasted power because they have different typical impedances (and voltage levels).