October 28, 2011 at 9:15 am
Apple computers can provide up to 1100 mA at 5 V through the USB port when an Apple peripheral or device is connected directly to the port (no hubs).
"Normal" USB ports provide 500 mA at 5 V.
Here's an article on the subject:
http://www.macworld.com/article/150356/2010/04/ipadcharging.html
-- Gianluca Sartori
October 28, 2011 at 9:23 am
The wall charger outputs 2.1 A at 5.1 V, which is twice as the maximum power you can get out of a USB port.
That's why it's much quicker at charging.
-- Gianluca Sartori
October 28, 2011 at 10:47 am
When reviewing colleagues' code, I find that there can be three things that get pointed out:
1) Bugs: in this case they should be grateful that you found something they missed and there shouldn't be a lot of embarrassment; everyone knows it's hard to unit test your own code and there are always edge cases that are easy to miss, so pointing these out would ideally not be too awkward. As Gus suggests, being gracious while pointing these out helps.
2) Performance/Scalability: if you can demonstrate that a refactoring results in a performance boost or more manageable/scalable code, this may be similar to above. I find that this site is a great way to back up any claims in this area while making the advice more palatable. If I can point to a post by Jeff, Gail, etc. as the source of the knowledge then it comes across as a professional development moment (learning from the experts) and not a "I'm a better coder than you are" one.
3) Do it this way b/c that's how I like to do it: hardest sell, and if you can't prove that it results in some performance or scalability boost, probably not worth pressing. I catch myself doing this a lot and it's easy to see why this is frustrating to the coder being reviewed. If you're a manager and responsible for setting standards, you may need to press these a little (but can still be gracious); for peer reviews you'd want to be able to prove a benefit to doing it your way.
October 28, 2011 at 11:16 am
GSquared (10/28/2011)
Touch is faster than mousing, but since I use a trackball with four buttons and a scroll-wheel that can act as a fifth button, touch doesn't anywhere near that flexibility.
I also use a trackball rather than a mouse... Hm... 🙂
-Ki
October 28, 2011 at 11:28 am
Kiara (10/28/2011)
GSquared (10/28/2011)
Touch is faster than mousing, but since I use a trackball with four buttons and a scroll-wheel that can act as a fifth button, touch doesn't anywhere near that flexibility.
I also use a trackball rather than a mouse... Hm... 🙂
I use one because of a wrist injury from working in a lumbermill in '98. Using a regular mouse hurts. Even the finger trackballs hurt after a while, but the thumb ones I can use for hours without pain. My fingers shake too much (nerve damage from frostbite when I was a teen), so I can't use a touchpad at all.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
Property of The Thread
"Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon
October 28, 2011 at 11:34 am
GSquared (10/28/2011)
Kiara (10/28/2011)
GSquared (10/28/2011)
Touch is faster than mousing, but since I use a trackball with four buttons and a scroll-wheel that can act as a fifth button, touch doesn't anywhere near that flexibility.
I also use a trackball rather than a mouse... Hm... 🙂
I use one because of a wrist injury from working in a lumbermill in '98. Using a regular mouse hurts. Even the finger trackballs hurt after a while, but the thumb ones I can use for hours without pain. My fingers shake too much (nerve damage from frostbite when I was a teen), so I can't use a touchpad at all.
Pretty much the same reason I use one - and the thumb one, at that. Pain management. Different type of wrist injury - mine was a severe run in with carpal tunnel, and regular mice and finger trackballs exacerbate the situation. I can use touchpads - I just find them incredibly slow, and quite annoying. 🙂
-Ki
October 28, 2011 at 11:36 am
Gianluca Sartori (10/28/2011)
Apple computers can provide up to 1100 mA at 5 V through the USB port when an Apple peripheral or device is connected directly to the port (no hubs)."Normal" USB ports provide 500 mA at 5 V.
Here's an article on the subject:
http://www.macworld.com/article/150356/2010/04/ipadcharging.html
Nice article - thank you. I'll be sending this along to a few people - nice to clear up the misconception.
-Ki
October 28, 2011 at 11:46 am
Kiara (10/28/2011)
Gianluca Sartori (10/28/2011)
Apple computers can provide up to 1100 mA at 5 V through the USB port when an Apple peripheral or device is connected directly to the port (no hubs)."Normal" USB ports provide 500 mA at 5 V.
Here's an article on the subject:
http://www.macworld.com/article/150356/2010/04/ipadcharging.html
Nice article - thank you. I'll be sending this along to a few people - nice to clear up the misconception.
It's worth noting that the newer Gigabyte motherboards advertise to have a high-power USB port for devices, one that can charge devices even when the PC is off.
While I do have such a motherboard, I haven't tested that. Need to consult the docs and see which port it is, I suspect the USB 3 ones.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
October 28, 2011 at 11:55 am
GilaMonster (10/28/2011)
Kiara (10/28/2011)
Gianluca Sartori (10/28/2011)
Apple computers can provide up to 1100 mA at 5 V through the USB port when an Apple peripheral or device is connected directly to the port (no hubs)."Normal" USB ports provide 500 mA at 5 V.
Here's an article on the subject:
http://www.macworld.com/article/150356/2010/04/ipadcharging.html
Nice article - thank you. I'll be sending this along to a few people - nice to clear up the misconception.
It's worth noting that the newer Gigabyte motherboards advertise to have a high-power USB port for devices, one that can charge devices even when the PC is off.
While I do have such a motherboard, I haven't tested that. Need to consult the docs and see which port it is, I suspect the USB 3 ones.
My laptop has such a port - but I wasn't using it when trying to charge the iPad, because the machine was on at the time. In my case, the "always-on" USB is USB 2, and the ports I tend to use are USB 3.
-Ki
October 30, 2011 at 2:53 pm
Just a quick note. I have an iPad 1 and use a bedside charger station. It always says "not charging", but it charges, albeit slow. I can be down to 60% and it will fully charge overnight. I know if it's in the 30s/40s it won't completely charge overnight, but it will get to 80%.
So it might trickle charge, which is annoying if you're in a hurry, but if you have time, like overnight, you might just plug it in the laptop and see what happens.
October 31, 2011 at 2:33 am
And if you should (for some strange reason) have 2 iPad 2s, halloween is upon us:
http://gizmodo.com/5854649/best-costume-use-two-ipads-to-create-an-awesome-gaping-hole-in-your-gut
October 31, 2011 at 5:36 am
Steve Jones - SSC Editor (10/30/2011)
Just a quick note. I have an iPad 1 and use a bedside charger station. It always says "not charging", but it charges, albeit slow. I can be down to 60% and it will fully charge overnight. I know if it's in the 30s/40s it won't completely charge overnight, but it will get to 80%.So it might trickle charge, which is annoying if you're in a hurry, but if you have time, like overnight, you might just plug it in the laptop and see what happens.
I ran the iPad2 down on Friday, and tested it in the "always on" port on my laptop overnight. It still said "not charging", but it did actually charge some.
So, as I've said before- thanks to everyone for correcting my misunderstanding. It's greatly appreciated!
-Ki
October 31, 2011 at 6:48 am
I got my article on Resource governor republished at Simple-talk. Thanks Grant for allowing me to republish it. 🙂
-Roy
October 31, 2011 at 8:19 am
<tosses two cents into the pot>
As someone who has been assigned different applications and systems with minimal training I have spent a great deal of time in forums and have found them to be invaluable resources. For SQL this is my go to site. I rarely have to post as my answers can normally be found in the archives and the noise to signal ratio is exceptionally low. That being said let me throw a couple things out as someone who is not "one of the usual suspects" of the forum:
As stated above the level of questions is seasonal. This time of year students are looking for answers and may not have been exposed to professional level forums before. Instead of trying to divine the answer a link to the post on how to ask questions and a polite request to review and ask the question in the requested format. A large number may just move on to the next forum, but some will honor the request and be educated on the best way to interact with a forum. To be honest this is how I learned to post. After being slapped a couple times in Usenet I learned the value of lurking and preferred methods of posting.
One of my biggest problems and most often asked question is what is the correct name of the function I want to do? After a couple hours of unproductive searches I end up calling one of my contacts to just ask, I want to do xyz... What the heck is the right name of that function? Like most people if they have the time I'll get much more then just the name, but I never make the call expecting that. This is just here to ask people to remember that a self taught education is very hit or miss. If what seems to be a simple questions doesn't contain the correct key words a gentle 'search on this term' could be all that's needed.
I do have an RTFM mug, but it's more of a reminder to myself to exhaust what I can do before asking anyone to spend time on my problem.
Thanks for reading and supplying all this great content.
Thom
edit<I know I'm late to the Thread party, but just felt like being on topic today:)
--
"The weakness of thinking machines is that they actually believe all the information they receive, and react accordingly." Vorian Atreides
(Brian Herbert and Kevin J. Anderson)
October 31, 2011 at 8:22 am
Thomw (10/31/2011)
<tosses two cents into the pot>As someone who has been assigned different applications and systems with minimal training I have spent a great deal of time in forums and have found them to be invaluable resources. For SQL this is my go to site. I rarely have to post as my answers can normally be found in the archives and the noise to signal ratio is exceptionally low. That being said let me throw a couple things out as someone who is not "one of the usual suspects" of the forum:
As stated above the level of questions is seasonal. This time of year students are looking for answers and may not have been exposed to professional level forums before. Instead of trying to divine the answer a link to the post on how to ask questions and a polite request to review and ask the question in the requested format. A large number may just move on to the next forum, but some will honor the request and be educated on the best way to interact with a forum. To be honest this is how I learned to post. After being slapped a couple times in Usenet I learned the value of lurking and preferred methods of posting.
One of my biggest problems and most often asked question is what is the correct name of the function I want to do? After a couple hours of unproductive searches I end up calling one of my contacts to just ask, I want to do xyz... What the heck is the right name of that function? Like most people if they have the time I'll get much more then just the name, but I never make the call expecting that. This is just here to ask people to remember that a self taught education is very hit or miss. If what seems to be a simple questions doesn't contain the correct key words a gentle 'search on this term' could be all that's needed.
I do have an RTFM mug, but it's more of a reminder to myself to exhaust what I can do before asking anyone to spend time on my problem.
Thanks for reading and supplying all this great content.
Thom
Welcome to the fray.
This watering hole thread has evolved over time and is generally more of a water-cooler thread than anything now.
We hope you will stay.
Jason...AKA CirqueDeSQLeil
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