Talk:2317: Pinouts - Revision history

Dgatwood at 19:51, 6 August 2020

2020-08-06T19:51:19Z

Dgatwood at 19:49, 6 August 2020

2020-08-06T19:49:15Z

172.69.68.195 at 22:46, 10 June 2020

2020-06-10T22:46:51Z

172.69.68.195 at 22:45, 10 June 2020

2020-06-10T22:45:17Z

Hkmaly at 22:26, 10 June 2020

2020-06-10T22:26:41Z

WhiteDragon: "pin" out

2020-06-09T21:37:31Z

"pin" out

162.158.89.193 at 08:22, 9 June 2020

2020-06-09T08:22:15Z

Ehusmark at 07:52, 9 June 2020

2020-06-09T07:52:00Z

Gunterkoenigsmann: A pin-roulette I sometimes encounter.

2020-06-09T06:15:13Z

A pin-roulette I sometimes encounter.

172.69.33.65: multi-signal wires

2020-06-09T02:20:27Z

multi-signal wires

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 :AFAIK FireWire allows many-to-many communication, while USB never did. The FireWire tribute pin could be a way to establish many-to-many communication. Alternatively, FireWire allows daisy-chaining, while USB supports only a tree network trough hubs. The FireWire pin could be somehow physically strange, so a second USB-C cable could be connected to it. [[Special:Contributions/162.158.89.193|162.158.89.193]] 08:22, 9 June 2020 (UTC)
-The "FireWire tribute pin" bit actually probably was intended to be about the 110V pin.  Providing 110V is, of course, absurd, but FireWire was the first computer bus to use a high bus voltage to send lots of current.  The spec actually requires hardware to handle up to 30 VDC.  In fact, I once heard lore about an early prototype PowerMac G4 (I think) that was nicknamed "FireBurner".  Apple built it at one point in the distant past, and actually provided 30V worth of bus power.  They didn't ship that configuration to the public as far as I know, but they used to make it available to companies who wanted to test their FireWire hardware for compatibility.  Unfortunately, a lot of hardware manufacturers in the early days didn't pay attention to that 30V number and assumed that the hardware would always provide 12V like the Macs that had shipped up to that point.  When they actually encountered 30V, a lot of those early devices didn't survive.  [[User:Dgatwood|Dgatwood]] ([[User talk:Dgatwood|talk]]) 19:49, 6 August 2020 (UTC)
+The "FireWire tribute pin" bit actually probably was intended to be about the 110V pin.  Providing 110V is, of course, absurd, but FireWire was (I think) the first computer bus to use a relatively high bus voltage to send lots of power over the wire.  The spec actually requires hardware to handle up to 30 VDC.  In fact, I once heard lore about an early prototype PowerMac G4 (I think) that was nicknamed "FireBurner".  Apple built it at one point in the distant past, and actually provided 30V worth of bus power.  They didn't ship that configuration to the public as far as I know, but they used to make it available to companies who wanted to test their FireWire hardware for compatibility.  Unfortunately, a lot of hardware manufacturers in the early days didn't pay attention to that 30V number and assumed that the hardware would always provide 12V like the Macs that had shipped up to that point.  When they actually encountered 30V, a lot of those early devices didn't survive.  [[User:Dgatwood|Dgatwood]] ([[User talk:Dgatwood|talk]]) 19:49, 6 August 2020 (UTC)
 Added a little more description to the coax cable section, just in case it wasn't obvious to a layman what an example of the cable would be or why it was included with a cartoon about digital data cables.--[[Special:Contributions/172.69.68.195|172.69.68.195]] 22:46, 10 June 2020 (UTC)

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 Depending on how you read it, the third pin from the top might match the 120V AC. This would make it a different kind of "tribute" to FireWire... [[User:Ehusmark|EHusmark]] ([[User talk:Ehusmark|talk]]) 07:52, 9 June 2020 (UTC)
 :AFAIK FireWire allows many-to-many communication, while USB never did. The FireWire tribute pin could be a way to establish many-to-many communication. Alternatively, FireWire allows daisy-chaining, while USB supports only a tree network trough hubs. The FireWire pin could be somehow physically strange, so a second USB-C cable could be connected to it. [[Special:Contributions/162.158.89.193|162.158.89.193]] 08:22, 9 June 2020 (UTC)
 Added a little more description to the coax cable section, just in case it wasn't obvious to a layman what an example of the cable would be or why it was included with a cartoon about digital data cables.--[[Special:Contributions/172.69.68.195|172.69.68.195]] 22:46, 10 June 2020 (UTC)

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 For that matter, the RF cable connecting a regular TV antenna, or the wire in a car that connects the radio antenna, carries the signals of all the channels.[[Special:Contributions/172.69.33.65|172.69.33.65]] 02:20, 9 June 2020 (UTC)
 I think "Pin Roulette" is a pun on [[wikipedia:Penn Jillette|Penn Jillette]], the talkative half of the [[wikipedia:Penn & Teller|Penn & Teller]] magic act, and maybe also a reference to [[wikipedia:chatroulette|chatroulette]]. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 23:10, 8 June 2020 (UTC)
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 Depending on how you read it, the third pin from the top might match the 120V AC. This would make it a different kind of "tribute" to FireWire... [[User:Ehusmark|EHusmark]] ([[User talk:Ehusmark|talk]]) 07:52, 9 June 2020 (UTC)
 :AFAIK FireWire allows many-to-many communication, while USB never did. The FireWire tribute pin could be a way to establish many-to-many communication. Alternatively, FireWire allows daisy-chaining, while USB supports only a tree network trough hubs. The FireWire pin could be somehow physically strange, so a second USB-C cable could be connected to it. [[Special:Contributions/162.158.89.193|162.158.89.193]] 08:22, 9 June 2020 (UTC)

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	For that matter, the RF cable connecting a regular TV antenna, or the wire in a car that connects the radio antenna, carries the signals of all the channels.[[Special:Contributions/172.69.33.65\|172.69.33.65]] 02:20, 9 June 2020 (UTC)		For that matter, the RF cable connecting a regular TV antenna, or the wire in a car that connects the radio antenna, carries the signals of all the channels.[[Special:Contributions/172.69.33.65\|172.69.33.65]] 02:20, 9 June 2020 (UTC)
		+
		+	Added a little more description to the coax cable section, just in case it wasn't obvious to a layman what an example of the cable would be or why it was included with a cartoon about digital data cables.

	I think "Pin Roulette" is a pun on [[wikipedia:Penn Jillette\|Penn Jillette]], the talkative half of the [[wikipedia:Penn & Teller\|Penn & Teller]] magic act, and maybe also a reference to [[wikipedia:chatroulette\|chatroulette]]. [[User:Barmar\|Barmar]] ([[User talk:Barmar\|talk]]) 23:10, 8 June 2020 (UTC)		I think "Pin Roulette" is a pun on [[wikipedia:Penn Jillette\|Penn Jillette]], the talkative half of the [[wikipedia:Penn & Teller\|Penn & Teller]] magic act, and maybe also a reference to [[wikipedia:chatroulette\|chatroulette]]. [[User:Barmar\|Barmar]] ([[User talk:Barmar\|talk]]) 23:10, 8 June 2020 (UTC)

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 <!--Please sign your posts with ~~~~ and don't delete this text. New comments should be added at the bottom.-->
 Can we add this one to a new category, "Comics that Randall makes just to screw with xkcd wiki contributors"? I can think of plenty of candidates for this category! [[User:Cosmogoblin|Cosmogoblin]] ([[User talk:Cosmogoblin|talk]]) 21:42, 8 June 2020 (UTC)
+:Wouldn't be more useful to make a category for comics that Randall DOESN'T make to screw with xkcd wiki contributors? Might be smaller ... -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 22:26, 10 June 2020 (UTC)
 The claim that a coax has only one conductive part is incorrect.  It has two.  The pin is the inner conductor. The shield is the outer conductor. Without both it wouldn't work.

← Older revision		Revision as of 21:37, 9 June 2020
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	The claim that a coax has only one conductive part is incorrect. It has two. The pin is the inner conductor. The shield is the outer conductor. Without both it wouldn't work.		The claim that a coax has only one conductive part is incorrect. It has two. The pin is the inner conductor. The shield is the outer conductor. Without both it wouldn't work.
		+	:yes, but it's a "pin" out. Hence, "pin" [[User:WhiteDragon\|WhiteDragon]] ([[User talk:WhiteDragon\|talk]]) 21:37, 9 June 2020 (UTC)

	I'd also say that the claim at the top that a pin can have only one bit or one voltage of power at a time is incorrect. Power over Ethernet is a perfect example of power and data at the same time. There are also plenty of types of signals which transmit multiple bits at once. A simple example would be a signal using four voltage levels to transmit two bits simultaneously, but there are many more fancy analog encodings that use phase and frequency and other characteristics to transmit data. Plus, you can often included two signals on the same conductors. For example, ADSL combined a normal phone signal and a higher frequency data signal on the same lines. Also cable TV combined many signals on one set of conductors.		I'd also say that the claim at the top that a pin can have only one bit or one voltage of power at a time is incorrect. Power over Ethernet is a perfect example of power and data at the same time. There are also plenty of types of signals which transmit multiple bits at once. A simple example would be a signal using four voltage levels to transmit two bits simultaneously, but there are many more fancy analog encodings that use phase and frequency and other characteristics to transmit data. Plus, you can often included two signals on the same conductors. For example, ADSL combined a normal phone signal and a higher frequency data signal on the same lines. Also cable TV combined many signals on one set of conductors.

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 So, anyway, I'd remove the claim.
 [[User:Mootstrap|Mootstrap]] ([[User talk:Mootstrap|talk]]) 23:00, 8 June 2020 (UTC)
 For that matter, the RF cable connecting a regular TV antenna, or the wire in a car that connects the radio antenna, carries the signals of all the channels.[[Special:Contributions/172.69.33.65|172.69.33.65]] 02:20, 9 June 2020 (UTC)
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 Depending on how you read it, the third pin from the top might match the 120V AC. This would make it a different kind of "tribute" to FireWire... [[User:Ehusmark|EHusmark]] ([[User talk:Ehusmark|talk]]) 07:52, 9 June 2020 (UTC)

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	Wouldn't 3.3eV/C be a tiny fraction of 3.3V, since a columb is a much greater value of charge than that of the electron?--[[Special:Contributions/172.69.63.203\|172.69.63.203]] 00:24, 9 June 2020 (UTC)		Wouldn't 3.3eV/C be a tiny fraction of 3.3V, since a columb is a much greater value of charge than that of the electron?--[[Special:Contributions/172.69.63.203\|172.69.63.203]] 00:24, 9 June 2020 (UTC)
		+
		+	Depending on how you read it, the third pin from the top might match the 120V AC. This would make it a different kind of "tribute" to FireWire... [[User:Ehusmark\|EHusmark]] ([[User talk:Ehusmark\|talk]]) 07:52, 9 June 2020 (UTC)

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 I think "Pin Roulette" is a pun on [[wikipedia:Penn Jillette|Penn Jillette]], the talkative half of the [[wikipedia:Penn & Teller|Penn & Teller]] magic act, and maybe also a reference to [[wikipedia:chatroulette|chatroulette]]. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 23:10, 8 June 2020 (UTC)
 :Possible, but I'd stick with the simple explanation - that the "Pin Roulette" pin selects a random function when the connector's plugged in. [[Special:Contributions/108.162.245.64|108.162.245.64]] 23:18, 8 June 2020 (UTC)
 In addition to pins being able to carry both data and power, or to carry multiple bits at a time, some pins function as clock signal pins that indicate bit boundaries rather than themselves carrying data; therefore I also think the claim should be either omitted or changed entirely.