To avoid clock skew, you regenerate the clock. You can use a phase locked loop to sync to another clock, and generate a new clock signal synced with this clock but with an adjustment to the phase.
The FPGA that I use has methods for dealing with clock skew, the Xilinx app note describes how you can deal with it:
(Every time Microsoft even ponders things for PCs that vaguely resemble what Apple does on iOS, the community screams for blood. I only wish the same level of anger, from the same individuals, would get pointed at Apple once in a while.)
That's because a PC is not a phone. A personal computer is supposed to be a general purpose computer. I don't give a damn about jailbreaking my phone, I just want something that calls, does texts, and which I can run some useful applications, and I just want it to work. I want my phone to be an appliance, in effect. Most people want their phones to be an appliance.
I bought a personal computer to be a general purpose computer, not an appliance. While I don't give a damn about my phone being locked down, it would be intolerable to do the same for a personal computer because my PC is not used like a phone. So no, it is NOT in the slightest bit unusual that people can not care about their phone being a locked down appliance but *DO* care that their computer is NOT locked down.
When I was a teenage hacker, I knew girls existed but they were much less interesting than computers. And in any case, sex is like bridge. You don't need a partner if you've got a good hand...
I got mine for $35. I run it without a case. I already have a USB charger that came with my phone, and I always charge my phone from my computer anyway so I could just use that. The display is my old television via composite video. I already have an ethernet lead. I already have a spare USB keyboard. Actually the TV and the keyboard were both redundant once I had enabled ssh, I just use X11 forwarding over ssh.
The Arduino and RPi are fundamentally two different kinds of device, and aren't really comparable other than both being low cost and both having GPIO pins. The RPi really is more low cost personal computer with easy to access GPIO, rather than a microcontroller development board. They both have their place.
The Broadcom issue (which although I like the RPi, grates with me) is lack of public documentation on the GPU. Having said that it is already known how to get a plain simple frame buffer and get it to boot into a roll-your-own-kernel of your own design (i.e. not a linux kernel) if you're not looking to use the advanced GPU features, so the situation is better than it was a while ago.
No, continuously welded rails are a problem if the temperature is hotter than expected. Typically the rails are pre-stressed to cope with the hottest rail temperatures expected. In the case of extreme heatwaves, if the rail temperature gets higher than it was prestressed for, it's likely to buckle. Usually this happens while a train is going across it.
You've got the humidity back-to-front, high humidity increases effective density altitude (mainly in the form of lower engine performance). The dryer the air, the better from a flight standpoint.
That's because toll roads generally don't wear out because there's so little traffic on them. Take for example the Sam Houston tollway in Houston. Almost empty most of the day, while alternate non-toll roads are constant nose to tail traffic. Or take the M6 Toll in England. The M6 toll is almost empty most of the time, while the non-toll M6 is full to capacity with traffic almost 24/7.
With such little usage on toll roads compared to alternative non-toll roads, it's no wonder they appear to be better maintained, they need a tiny fraction of the maintenance because they simply don't get used very much.
A global change can result in a local peak temperature changing a great deal. The jetstream being somewhere where it didn't used to typically be is a mechanism by which this may happen.
We're experiencing this right now, in fact. The temperature here in northern Britain today will reach perhaps 12-14 celcius (about mid 50 to upper 50s F). Normally we can expect 20-25 celcius in mid-July (upper 60s/low 70s). This is because - owing to the unusually warm weather in the United States, 4000 miles away - the jetstream is not in its usual position to the north of us, but lying right over the British Isles, with most of the country on the "wet side", meaning we've had the wettest June since records began. The long range forecast is predicting this will continue for the rest of the summer.
I don't agree with your assesment of the desktop. My Dad, about as inexpert as you get with computers, has used Linux on the desktop without a problem, and this was some time ago too.
I think where Linux on the desktop is tricky is neither the complete inexperts who just want to write documents, do email and surf the web, or even make basic graphics in something like The Gimp - or the experts whose first action after logging in is to open four terminal windows, but those inbetween - the users advanced enough that they are "dangerous", they know how to point and click at advanced settings in the Windows control panel, but would die of shock if someone told them they had to use vi.
No you won't. If your charging devices have a standard USB plug on them (most do today), you can plug the Apple cable straight into your charging device.
Buildings are glued together (what's cement between bricks - an adhesive that holds the bricks to each other) in most of the western world where houses are made using bricks rather than wood frame.
Many types of aircraft have been glued together for decades looking right back to WW2 and earlier up to today (aircraft built from composites are not screwed or riveted, if you're on a new Boeing 787 many major parts are bonded). There are all-metal aircraft that are structurally glued, although it goes by the more engineeringy term "bonded" (see the Grumman AA1 and AA5 series of light aircraft).
The word that's already been around for decades is "unservicability", but it's a bit ambiguous (can mean hard to repair, or mean currently broken), "unrepairability" is a bit clearer. No one should be too upset about new words, a language that isn't evolving is a dead language.
Interesting that Starbucks thing. Whenever I go to one of those places where you place your order at the counter, sit down, then 10 minutes later someone calls you (places like Fuddruckers etc), they never, ever get my name right. I have to listen to some bastardized pronounciation of it, even though my name isn't obscure and there's even a very famous songwriter who uses the same name.
It gets so annoying I seriosly consider using a pseudonym instead.
One bomb isn't that bad from a global perspective. Don't forget that during the era of atmospheric testing, almost a THOUSAND (not just one) warheads were detonated, many in the multi-megaton range (including the 57Mt Tzar Bomba), many of them ground bursts (which cause a great deal more fallout).
A regional conflict with many devices, even small ones Nagasaki-sized going off, is a different matter. Unlike atmospheric testing which was done in uninhabited areas, a war tends to be done where people live. Simulations done only a few years ago to update our understanding of the nuclear winter effect showed that the original nuclear winter theory from the 1980s was likely optimistic. A regional conflict with the exchange of a total of 50 warheads of 20Kt each is likely to cause a decade-long nuclear autumn, in its first years reducing the growing season in the US midwest by around 60 days. While not a society-ending event, this will cause some years of misery even in the richest nations. The poorest nations of course will face famine with the rich nations being entirely unable to help them because they are too busy with their own food shortages.
A global nuclear war on the other hand - well, nuclear winter is actually a misnomer, more like nuclear year long night. The simulations showed that in the aftermath of a 3000Mt exchange, daylight conditons at mid-day in the northern hemisphere would be no brighter than a moonlit night. For months.
It might affect human life, though. Not extinction level of course, but we've got good evidence that a hypothetical regional war with around 50 warheads of around the power of the Nagasaki bomb would bring with it a "nuclear autumn". A very large volcano blowing up a couple of hundred years ago brought "the year without a summer", this kind of regional war would bring "the decade without a summer". Growing seasons in the breadbasket of the United States would be cut by around 60 days, enough to cause food shortages and considerable misery for non-combatant nations. True, in the long run, life on earth would just carry on. But on a human timescale we're talking a particularly miserable period which will go on for quite some time.
I think Microsoft Research is basically a place where they can keep innovators out of the hands of their competitors, rather than research innovative new stuff that Microsoft will make - allowing Microsoft to rest on their Windows/Office laurels for longer.
It's easy to move if where you're moving from is worth something to someone, and can buy the old place off you.
If you're forced to move because your home is now uninhabitable, it is MUCH more difficult because you probably don't have the resources to buy a new place. You can move inland but you'll be homeless.
Two examples: at work we need weigh scales for all our offices. We aren't in the US (over the other side of the Atlantic) but an American product (WeighTronix scales) turned out to be the best value and very high quality. Years later they are still all working very reliably.
Personal purchase: Castle ESC for my radio controlled models. Made in the USA by a relatively small company, they are less expensive than many other ESCs, and comparable price to stuff made in the far East. While Castle have had one or two design issues with some of their newer HV ESCs they were on the RC forums explaining their process in rectifying the problem and did a recall at their expense. I'm very satisfied with their products (which also work better than some similar priced far east manufactured equivalents)
Incidentally, I also have RC electronics from Germany which are price comparable with competitors made in the far East, despite EU rules that mean we shoot ourselves in the foot in terms of subjecting European electronics manufacturers to import duties on components which foreign manufacturers shipping finished products don't have to pay.
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I can't hear 100MHz sounds so well, but my digital storage oscilloscope can. Sampling isn't just for sound.
To avoid clock skew, you regenerate the clock. You can use a phase locked loop to sync to another clock, and generate a new clock signal synced with this clock but with an adjustment to the phase.
The FPGA that I use has methods for dealing with clock skew, the Xilinx app note describes how you can deal with it:
http://www.xilinx.com/support/documentation/application_notes/xapp462.pdf ...see from page 26 "Clock skew, the performance thief" and "Make it go away!"
Presumably when an ASIC has a similar problem, a similar approach is taken. (Disclaimer: I have zero experience with ASICs).
That's because a PC is not a phone. A personal computer is supposed to be a general purpose computer. I don't give a damn about jailbreaking my phone, I just want something that calls, does texts, and which I can run some useful applications, and I just want it to work. I want my phone to be an appliance, in effect. Most people want their phones to be an appliance.
I bought a personal computer to be a general purpose computer, not an appliance. While I don't give a damn about my phone being locked down, it would be intolerable to do the same for a personal computer because my PC is not used like a phone. So no, it is NOT in the slightest bit unusual that people can not care about their phone being a locked down appliance but *DO* care that their computer is NOT locked down.
I don't really buy this argument.
When I was a teenage hacker, I knew girls existed but they were much less interesting than computers. And in any case, sex is like bridge. You don't need a partner if you've got a good hand...
I got mine for $35. I run it without a case. I already have a USB charger that came with my phone, and I always charge my phone from my computer anyway so I could just use that. The display is my old television via composite video. I already have an ethernet lead. I already have a spare USB keyboard. Actually the TV and the keyboard were both redundant once I had enabled ssh, I just use X11 forwarding over ssh.
The Arduino and RPi are fundamentally two different kinds of device, and aren't really comparable other than both being low cost and both having GPIO pins. The RPi really is more low cost personal computer with easy to access GPIO, rather than a microcontroller development board. They both have their place.
The Broadcom issue (which although I like the RPi, grates with me) is lack of public documentation on the GPU. Having said that it is already known how to get a plain simple frame buffer and get it to boot into a roll-your-own-kernel of your own design (i.e. not a linux kernel) if you're not looking to use the advanced GPU features, so the situation is better than it was a while ago.
From the context of what was written, I didn't parse it as the space station doing the hovering, but the sprite doing the hovering.
Well, they ought to have updated it to be a picture of a flying chair instead.
No, continuously welded rails are a problem if the temperature is hotter than expected. Typically the rails are pre-stressed to cope with the hottest rail temperatures expected. In the case of extreme heatwaves, if the rail temperature gets higher than it was prestressed for, it's likely to buckle. Usually this happens while a train is going across it.
You've got the humidity back-to-front, high humidity increases effective density altitude (mainly in the form of lower engine performance). The dryer the air, the better from a flight standpoint.
That's because toll roads generally don't wear out because there's so little traffic on them. Take for example the Sam Houston tollway in Houston. Almost empty most of the day, while alternate non-toll roads are constant nose to tail traffic. Or take the M6 Toll in England. The M6 toll is almost empty most of the time, while the non-toll M6 is full to capacity with traffic almost 24/7.
With such little usage on toll roads compared to alternative non-toll roads, it's no wonder they appear to be better maintained, they need a tiny fraction of the maintenance because they simply don't get used very much.
A global change can result in a local peak temperature changing a great deal. The jetstream being somewhere where it didn't used to typically be is a mechanism by which this may happen.
We're experiencing this right now, in fact. The temperature here in northern Britain today will reach perhaps 12-14 celcius (about mid 50 to upper 50s F). Normally we can expect 20-25 celcius in mid-July (upper 60s/low 70s). This is because - owing to the unusually warm weather in the United States, 4000 miles away - the jetstream is not in its usual position to the north of us, but lying right over the British Isles, with most of the country on the "wet side", meaning we've had the wettest June since records began. The long range forecast is predicting this will continue for the rest of the summer.
I don't agree with your assesment of the desktop. My Dad, about as inexpert as you get with computers, has used Linux on the desktop without a problem, and this was some time ago too.
I think where Linux on the desktop is tricky is neither the complete inexperts who just want to write documents, do email and surf the web, or even make basic graphics in something like The Gimp - or the experts whose first action after logging in is to open four terminal windows, but those inbetween - the users advanced enough that they are "dangerous", they know how to point and click at advanced settings in the Windows control panel, but would die of shock if someone told them they had to use vi.
No you won't. If your charging devices have a standard USB plug on them (most do today), you can plug the Apple cable straight into your charging device.
Buildings are glued together (what's cement between bricks - an adhesive that holds the bricks to each other) in most of the western world where houses are made using bricks rather than wood frame.
Many types of aircraft have been glued together for decades looking right back to WW2 and earlier up to today (aircraft built from composites are not screwed or riveted, if you're on a new Boeing 787 many major parts are bonded). There are all-metal aircraft that are structurally glued, although it goes by the more engineeringy term "bonded" (see the Grumman AA1 and AA5 series of light aircraft).
The word that's already been around for decades is "unservicability", but it's a bit ambiguous (can mean hard to repair, or mean currently broken), "unrepairability" is a bit clearer. No one should be too upset about new words, a language that isn't evolving is a dead language.
Interesting that Starbucks thing. Whenever I go to one of those places where you place your order at the counter, sit down, then 10 minutes later someone calls you (places like Fuddruckers etc), they never, ever get my name right. I have to listen to some bastardized pronounciation of it, even though my name isn't obscure and there's even a very famous songwriter who uses the same name.
It gets so annoying I seriosly consider using a pseudonym instead.
One bomb isn't that bad from a global perspective. Don't forget that during the era of atmospheric testing, almost a THOUSAND (not just one) warheads were detonated, many in the multi-megaton range (including the 57Mt Tzar Bomba), many of them ground bursts (which cause a great deal more fallout).
A regional conflict with many devices, even small ones Nagasaki-sized going off, is a different matter. Unlike atmospheric testing which was done in uninhabited areas, a war tends to be done where people live. Simulations done only a few years ago to update our understanding of the nuclear winter effect showed that the original nuclear winter theory from the 1980s was likely optimistic. A regional conflict with the exchange of a total of 50 warheads of 20Kt each is likely to cause a decade-long nuclear autumn, in its first years reducing the growing season in the US midwest by around 60 days. While not a society-ending event, this will cause some years of misery even in the richest nations. The poorest nations of course will face famine with the rich nations being entirely unable to help them because they are too busy with their own food shortages.
A global nuclear war on the other hand - well, nuclear winter is actually a misnomer, more like nuclear year long night. The simulations showed that in the aftermath of a 3000Mt exchange, daylight conditons at mid-day in the northern hemisphere would be no brighter than a moonlit night. For months.
It might affect human life, though. Not extinction level of course, but we've got good evidence that a hypothetical regional war with around 50 warheads of around the power of the Nagasaki bomb would bring with it a "nuclear autumn". A very large volcano blowing up a couple of hundred years ago brought "the year without a summer", this kind of regional war would bring "the decade without a summer". Growing seasons in the breadbasket of the United States would be cut by around 60 days, enough to cause food shortages and considerable misery for non-combatant nations. True, in the long run, life on earth would just carry on. But on a human timescale we're talking a particularly miserable period which will go on for quite some time.
I think Microsoft Research is basically a place where they can keep innovators out of the hands of their competitors, rather than research innovative new stuff that Microsoft will make - allowing Microsoft to rest on their Windows/Office laurels for longer.
It's easy to move if where you're moving from is worth something to someone, and can buy the old place off you.
If you're forced to move because your home is now uninhabitable, it is MUCH more difficult because you probably don't have the resources to buy a new place. You can move inland but you'll be homeless.
SIgh.
It's not to replace GPS, it's to augment GPS where it may be unreliable, for example in concrete canyons of cities.
3 hours north of Perth is not where your GPS will be blocked by skyscrapers or briges, so GPS will be working fine.
I thought PHP was an abbreviation of Pretty Hopeless Privacy.
That the mysql_ functions exist is bad enough - even Perl had that right with DBI and just one API for all databases.
Is it really as expensive as hell?
Two examples: at work we need weigh scales for all our offices. We aren't in the US (over the other side of the Atlantic) but an American product (WeighTronix scales) turned out to be the best value and very high quality. Years later they are still all working very reliably.
Personal purchase: Castle ESC for my radio controlled models. Made in the USA by a relatively small company, they are less expensive than many other ESCs, and comparable price to stuff made in the far East. While Castle have had one or two design issues with some of their newer HV ESCs they were on the RC forums explaining their process in rectifying the problem and did a recall at their expense. I'm very satisfied with their products (which also work better than some similar priced far east manufactured equivalents)
Incidentally, I also have RC electronics from Germany which are price comparable with competitors made in the far East, despite EU rules that mean we shoot ourselves in the foot in terms of subjecting European electronics manufacturers to import duties on components which foreign manufacturers shipping finished products don't have to pay.