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Ok, so an ethernet cable transmits low voltage digital data along its length in bits. How long is the higer voltage (a 1 for example) segment in a ethernet cable? Maybe to make it simpler, imagine a cable in a single segment (forget standards) that runs for miles and miles. 69.180.160.77 ( talk) 00:43, 25 April 2011 (UTC)
Every so often Firefox (on Vista) gets another security upgrade because as usual anybody on the web can take over a windows system at any time. But it seems like after these upgrades Firefox keeps getting slower, so that now after the last one it is stopping in the middle of page loads, so I have to click the link again, stopping in the middle of scrolling down a page and waiting 5 seconds to continue. Using a laptop with 1 gig of memory only, but little else running. Is this a general problem of the program as upgraded or does it indicate a problem locally? Wnt ( talk) 08:07, 25 April 2011 (UTC)
i hope to donate an old PC system and cellphone to an impoverished country. Which brokers/organizations would help me make it so? Thanks. -- 70.179.169.115 ( talk) 10:58, 25 April 2011 (UTC)
Sadly, I'm from Manhattan, KS. I'll one day figure out if those Atlanta-area agencies will accept them and not have me pay the shipping. -- 70.179.169.115 ( talk) 20:58, 25 April 2011 (UTC)
Lately in the news (in the US, at least) there's been a lot of coverage of recent events of air traffic controllers falling asleep on the job. Yes, I get that due to the high stakes involved, no fully automated system could be trusted to do that job, but I'd be very surprised to find that in this day and age with so many airplanes going into and out of airports, it's still a matter of a/some human(s) relying on their mental ability to handle schedule rearrangements. Do they at least have software products to suggest multiple possible reorganizations of influx and outflux of planes while taking into account each plane's constraints much more quickly than any human could, while leaving the final choice of which option (if any) to take up to the human? 20.137.18.50 ( talk) 14:44, 25 April 2011 (UTC)
There is significant computer assistance, at many levels, in modern air traffic control. I ran down a brief overview of the modern ASR systems in response to a question in February 2011. Digital ASR means that a complicated computerized system is responsible for coordinating every aspect of the system, from the electrical properties of the RADAR signal all the way to the "animated blip" on a "Google Maps" style software overlay map that the controller/operator uses. The rise of GPS and the integration of ground-control RADARs, approach RADARs, GPS, and regional air traffic surveillance, have changed the technology significantly; it's fair to say that the policies and procedures need to do some catching up to make sure there are no safety gaps. Probably, the recent media hype has been overblown, and has not affected commercial/civil aviation safety in an adverse way. Nimur ( talk) 20:48, 25 April 2011 (UTC)
How can I determine if my Ethernet switch can handle Jumbo Frames? Generally speaking, what kind of performance gains there with Jumbo Frames with large streams of data (like uncompressed video)? -- 24.249.59.89 ( talk) 14:56, 25 April 2011 (UTC)
"The server did not recognize your user name or password for account" xxxxxx .” Make sure you enter them correctly." My iCal programme comes up with this message before giving me the programme, as I am a non-techie can someone please advise what server it is writing about since so far as I can see all my passwords are in order.
Thank you both, I have changed the password and will see what happens. By the way would Nimur care to move in please, we have a spare bedroom, he always answers my problems so promptly.-- 85.211.238.236 ( talk) 16:53, 26 April 2011 (UTC)
No, changing the password did not work. I used the password in my Keychain, so I don't know what it wants or where to find it.-- 85.211.210.107 ( talk) 08:59, 27 April 2011 (UTC)
Computing desk | ||
---|---|---|
< April 24 | << Mar | April | May >> | April 26 > |
Welcome to the Wikipedia Computing Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Ok, so an ethernet cable transmits low voltage digital data along its length in bits. How long is the higer voltage (a 1 for example) segment in a ethernet cable? Maybe to make it simpler, imagine a cable in a single segment (forget standards) that runs for miles and miles. 69.180.160.77 ( talk) 00:43, 25 April 2011 (UTC)
Every so often Firefox (on Vista) gets another security upgrade because as usual anybody on the web can take over a windows system at any time. But it seems like after these upgrades Firefox keeps getting slower, so that now after the last one it is stopping in the middle of page loads, so I have to click the link again, stopping in the middle of scrolling down a page and waiting 5 seconds to continue. Using a laptop with 1 gig of memory only, but little else running. Is this a general problem of the program as upgraded or does it indicate a problem locally? Wnt ( talk) 08:07, 25 April 2011 (UTC)
i hope to donate an old PC system and cellphone to an impoverished country. Which brokers/organizations would help me make it so? Thanks. -- 70.179.169.115 ( talk) 10:58, 25 April 2011 (UTC)
Sadly, I'm from Manhattan, KS. I'll one day figure out if those Atlanta-area agencies will accept them and not have me pay the shipping. -- 70.179.169.115 ( talk) 20:58, 25 April 2011 (UTC)
Lately in the news (in the US, at least) there's been a lot of coverage of recent events of air traffic controllers falling asleep on the job. Yes, I get that due to the high stakes involved, no fully automated system could be trusted to do that job, but I'd be very surprised to find that in this day and age with so many airplanes going into and out of airports, it's still a matter of a/some human(s) relying on their mental ability to handle schedule rearrangements. Do they at least have software products to suggest multiple possible reorganizations of influx and outflux of planes while taking into account each plane's constraints much more quickly than any human could, while leaving the final choice of which option (if any) to take up to the human? 20.137.18.50 ( talk) 14:44, 25 April 2011 (UTC)
There is significant computer assistance, at many levels, in modern air traffic control. I ran down a brief overview of the modern ASR systems in response to a question in February 2011. Digital ASR means that a complicated computerized system is responsible for coordinating every aspect of the system, from the electrical properties of the RADAR signal all the way to the "animated blip" on a "Google Maps" style software overlay map that the controller/operator uses. The rise of GPS and the integration of ground-control RADARs, approach RADARs, GPS, and regional air traffic surveillance, have changed the technology significantly; it's fair to say that the policies and procedures need to do some catching up to make sure there are no safety gaps. Probably, the recent media hype has been overblown, and has not affected commercial/civil aviation safety in an adverse way. Nimur ( talk) 20:48, 25 April 2011 (UTC)
How can I determine if my Ethernet switch can handle Jumbo Frames? Generally speaking, what kind of performance gains there with Jumbo Frames with large streams of data (like uncompressed video)? -- 24.249.59.89 ( talk) 14:56, 25 April 2011 (UTC)
"The server did not recognize your user name or password for account" xxxxxx .” Make sure you enter them correctly." My iCal programme comes up with this message before giving me the programme, as I am a non-techie can someone please advise what server it is writing about since so far as I can see all my passwords are in order.
Thank you both, I have changed the password and will see what happens. By the way would Nimur care to move in please, we have a spare bedroom, he always answers my problems so promptly.-- 85.211.238.236 ( talk) 16:53, 26 April 2011 (UTC)
No, changing the password did not work. I used the password in my Keychain, so I don't know what it wants or where to find it.-- 85.211.210.107 ( talk) 08:59, 27 April 2011 (UTC)