I'm not sure exactly what kind of math you're trying to do there, but just for shits and giggles here are some interesting numbers for DVI - did you know that the DVI channel to your monitor is running at a few Gbps? Check it out:
DVI has four high-speed differential pairs: red, green, blue, and clock. Assuming 1600x1200, that's 1.9M pixels, as you said. Now mutiply that by 60Hz, and you've got 115M pixels per second. w0w.
Each of those RGB channels carries 8 bits per sample, so that's 0.92Gbps...
So for all three channels (clock doesn't really count) you have roughly 3Gbps - and even higher resolutions are possible.
Did you know that DVI was designed from the very beginning to be sent over fiber? There are some neat products coming out for extending DVI, and the HDTV market is finally driving some volume to bring them down in price a little. Soon you won't have to worry about how loud your PC is... just put it on the other side of the house!
When's the last time you went into a phone shop? - *every single device* is bluetooth enabled.
Years ago... I have dozens of computers but no interest in carrying a cell phone or PDA everywhere I go. So I'll take your word that phones have bluetooth, but will people use it?
AM? *cough* when's the last time you saw an AM enabled phone?
Never. But right now my keyboard and mouse are talking to my computer over 433MHz AM. So does the clicker for my garage door opener, and so does the remote control for my car, my household lighting, and probably a couple other things I can't think of OTOH. None of these devices have ANY need for bluetooth's higher bandwidth (and shorter range).
In the short range, high speed category, I fail to see any advantage to bluetooth aside from not needing line of sight, which is of extremely limited value at short range. IRDA is cheaper and does the same thing.
New technologies take time to get established...if at all.
Bluetooth will fail because there are, and always have been, better and cheaper alternatives. It fails in price/performance even compared to 10+ yr old technology:
Low speed, short range: 39KHz IR or 433MHz AM (dirt cheap) High speed, short range: IRDA (also dirt cheap) High speed, long range: 802.11a/b/g (not dirt cheap but bluetooth can't match the performance)
Can somebody tell me exactly where bluetooth's niche is?
Hi, this is jim joebob from the NPD group. We're doing a little survey to find out how many households have thrown away their pot. Do you still have a stash over 1oz, or have you disposed of all your contraband since the current crackdown went into effect?
Either way, please give me your name and address, and the pattywagon will arrive in 15 minutes.
strobe lights are very bright and very fast - there's no filament - it's firing a high voltage charge through a gas (argon?). Think camera flash vs switching on a household incandescent or halogen lamp. On the receiving end the waveform is much sharper and easy to distinguish.
If you've got all of your internal network running on RFC 1918 address space, and they've got all of their network running on the same address space, you're almost certainly screwed.
While there are plenty of situations where private IPs aren't good, your post just doesn't make any sense. First of all, the reserved address space is ENORMOUS. Specifically, 2**24 + 2**20 + 2**16 addresses. Just because _you_ always use 10.0.0.0/24 for everything doesn't mean you have to.
Secondly, being on private IPs is actually very nice if you change providers - just put the new ip/gw in your NAT router and you're done... not a single host to configure - not even a new dhcp lease.
And let's not forget some of the more interesting things you can do with private IPs and NAT, like load balancing multiple connections to different providers and such.
Unfortunatly, I'm not leet hax0r, so I have no idea how to find the checksum in a hex editor, anyone have an idea where it would be?
I have no idea specifically what's in the befw11s4, but the best place to start reverse engineering any firmware image is to first assume that the uploaded image has some sort of "filesystem" format.
i.e. there are likely to be a few sections - the main firmware, perhaps another firmware image to be loaded onto the wireless chipset,.gif and.html files for the embedded web server, and maybe some long configuration strings and such. The image will be preceded with a table that lists the offset and size of each file. And somewhere around there is where you'll most likely the checksum for the filesystem. There may also be checksums for each file, assuming there's more than one.
The tough part about checksums is that they look like random data. But if you start by looking for numbers that appear to be offset/length pairs, then you'll know you're in the right general area.
To test whether you've found the checksum, first find a place in the image that you can edit with the minimum likelyhood of breaking anything. For example, find some text that's used in one of the html pages. Change an uppercase letter to a lower case one, and then add 0x20 to the checksum, and see if it takes it.
A very interesting read. However, I was surprised to find no comments at all concerning OSX, wrt the future of linux on the desktop. I mean, if anything in the last two years has obviated the need for linux on the desktop, this is it.
It sounds like getting onto the desktop is important to him. He talks about the problems affecting kernel space - poor support from latop hardware mfrs being a big one... but really the kernel is NOT what's holding up the success of linux on the desktop. We need easier setup and a useable interface.
'With access to this computing power, the students will be able to ship their software files of instructions to the Linux cluster, and it will come back in three or four hours with modeling, lighting and animation
I'm sure glad he didn't use an arcane technical word like "program". That sure would have confused the layman. By the way, how many Libraries of Congress can the cluster store?
In the past few months I became very impressed with the timeliness and quality of NASA's Earth Observatory
In the past few months, I've been impressed with how much of my money the government receives, and as much as I appreciate good science, I'd much rather spend a bit more of that money myself.
Right - and that's the real kicker... if anything you'd think they'd make the modified equipment or the act of modifying it illegal. Instead they're going after the act of just TELLING someone about it. Hello? 1st amendment anyone?
I remember back in the BBS days when this was an big issue with repect to some extremely popular philez such as the anarchist's cookbook. I mean for the love of god, why should it be illegal to just TALK about how to make a weapon?
Now back to my nitroglycerin experiment, which is legal so long as I don't tell anyone how to do it...
We're not talking about the rights to the movie. We're talking about ownership of the EQUIPMENT and SOFTWARE to play it. If I want to go buy a DVD from Amazon.com or buy DRM-crippled music from the iTunes Music Store, then I'm free to do so. If I want to buy a DVD player from Fry's or an iPod from Apple, then I'm free to do so.
Suppose I wanted to *lease* a DVD player (like a car) - then the lessor can impose restriction whatever restrictions he wants on me modifying HIS property, and I don't think anyone would find this unreasonable.
However, if I want to modify my DVD player THAT I PAID FOR, FAIR AND SQURE, so I can skip commercials, then I should be free to do so. And if I want to write a program that can play the stuff on the DVD disc THAT I PAID FOR, then I should be free to do so.
We are not asking for NEW allowances. The old copyright law was fine. It's the DMCA that has to go.
I went to Europe a couple months ago, and most of hotels at which I stayed had toilets with a two-button flush. A quick flush for #1 and a more voluminous flush for the larger steaming monkey arms. This seems to solve the problem you've mentioned just fine, and I wouldn't be against environmental regulations to require them.
That's what always gets me about these Microsoft suits. MSFT always says "we're guilty, but don't punish us because it'll hurt our business!" and somehow this is taken as a legitimate argument in every single case. "Willingness" to roll over indeed... that's why is called a fscking SENTENCE... you know, a PUNISHMENT!
Smaller == cheaper - less materials, less labor. Smaller == faster - less propagation delay for signals, faster switching time for logic. Smaller == quieter - lower EMI through shorter transmission lines Smaller == less power - all of the above add up to less juice spent as heat
Sorry but there is no way computers are getting any bigger. Say goodbyte to those big honking PCI slots because all that stuff is going to get integrated onto one little chip and you'll thank them later when you can buy the whole thing for $50.
Please enlighten me if I am wrong, but isn't "digital PCM" redundant?
While PCM is by definition digital, there are other ways to store and transmit signals digitally.
There's PWM for one... but really I suppose that's more of a D->A mechanism.
As for formats, well, you could store and transmit a fourier transform. Then there's MP3 of course. And FLAC is neat - stores a bunch of predictor coefficient which roughly describe the signal, plus a "residual" stream to make up the difference.
So I guess "Digital PCM" is a bit like a cheese quesadilla... sure there's lots of stuff you can do with cheese, and other additional stuff you can put in a quesadilla. But for the unwashed masses who have no idea what queso is, it's helpful to repeat repeat it.
i would venture to say that the steaming pile of horse shit said rose grows in by any other name is still a steaming pile of horse shit
In the beginning was the plan. And then came the Assumptions. And the Assumptions were without form. And the Plan was without substance. And darkness was upon the face of the Workers. And they spoke among themselves, saying, "It is a crock of shit, and it stinketh." And the Workers went unto their Supervisors and said, "It is a pail of dung, and none may abide the odor thereof." And the Supervisors went unto their Managers, saying, "It is a container of excrement, and it is very strong, such that none may abide by it." And the Managers went unto their Directors, saying, "It is a vessel of fertilizer, and none may abide its strength." And the Directors spoke amongst themselves, saying one to another, "It contains that which aids plant growth, and it is very strong." And the Directors then went unto the Vice-Presidents, saying unto them, "It promotes growth, and it is very powerful." And the Vice-Presidents went unto the President, saying unto him, "This new plan will actively promote the growth and vigor of the company, with powerful effects." And the President Looked upon the Plan, and saw that it was good. And the Plan became Policy.
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means no 802.11a/g
If it were an audio device, 802.11b is fine, but for streaming video you really need g or a.
I'm not sure exactly what kind of math you're trying to do there, but just for shits and giggles here are some interesting numbers for DVI - did you know that the DVI channel to your monitor is running at a few Gbps? Check it out:
DVI has four high-speed differential pairs: red, green, blue, and clock. Assuming 1600x1200, that's 1.9M pixels, as you said. Now mutiply that by 60Hz, and you've got 115M pixels per second. w0w.
Each of those RGB channels carries 8 bits per sample, so that's 0.92Gbps...
So for all three channels (clock doesn't really count) you have roughly 3Gbps - and even higher resolutions are possible.
Did you know that DVI was designed from the very beginning to be sent over fiber? There are some neat products coming out for extending DVI, and the HDTV market is finally driving some volume to bring them down in price a little. Soon you won't have to worry about how loud your PC is... just put it on the other side of the house!
There is a very very small difference between a cancerous cell and a normal cell.
So, what you're saying is that neither of them is a tiger?
Was it not for the subjunctive tense, we couldn't even write such sentences!
When's the last time you went into a phone shop? - *every single device* is bluetooth enabled.
Years ago... I have dozens of computers but no interest in carrying a cell phone or PDA everywhere I go. So I'll take your word that phones have bluetooth, but will people use it?
AM? *cough* when's the last time you saw an AM enabled phone?
Never. But right now my keyboard and mouse are talking to my computer over 433MHz AM. So does the clicker for my garage door opener, and so does the remote control for my car, my household lighting, and probably a couple other things I can't think of OTOH. None of these devices have ANY need for bluetooth's higher bandwidth (and shorter range).
In the short range, high speed category, I fail to see any advantage to bluetooth aside from not needing line of sight, which is of extremely limited value at short range. IRDA is cheaper and does the same thing.
New technologies take time to get established ...if at all.
Bluetooth will fail because there are, and always have been, better and cheaper alternatives. It fails in price/performance even compared to 10+ yr old technology:
Low speed, short range: 39KHz IR or 433MHz AM (dirt cheap)
High speed, short range: IRDA (also dirt cheap)
High speed, long range: 802.11a/b/g (not dirt cheap but bluetooth can't match the performance)
Can somebody tell me exactly where bluetooth's niche is?
Hi, this is jim joebob from the NPD group. We're doing a little survey to find out how many households have thrown away their pot. Do you still have a stash over 1oz, or have you disposed of all your contraband since the current crackdown went into effect?
Either way, please give me your name and address, and the pattywagon will arrive in 15 minutes.
strobe lights are very bright and very fast - there's no filament - it's firing a high voltage charge through a gas (argon?). Think camera flash vs switching on a household incandescent or halogen lamp. On the receiving end the waveform is much sharper and easy to distinguish.
If you've got all of your internal network running on RFC 1918 address space, and they've got all of their network running on the same address space, you're almost certainly screwed.
While there are plenty of situations where private IPs aren't good, your post just doesn't make any sense. First of all, the reserved address space is ENORMOUS. Specifically, 2**24 + 2**20 + 2**16 addresses. Just because _you_ always use 10.0.0.0/24 for everything doesn't mean you have to.
Secondly, being on private IPs is actually very nice if you change providers - just put the new ip/gw in your NAT router and you're done... not a single host to configure - not even a new dhcp lease.
And let's not forget some of the more interesting things you can do with private IPs and NAT, like load balancing multiple connections to different providers and such.
Unfortunatly, I'm not leet hax0r, so I have no idea how to find the checksum in a hex editor, anyone have an idea where it would be?
.gif and .html files for the embedded web server, and maybe some long configuration strings and such. The image will be preceded with a table that lists the offset and size of each file. And somewhere around there is where you'll most likely the checksum for the filesystem. There may also be checksums for each file, assuming there's more than one.
I have no idea specifically what's in the befw11s4, but the best place to start reverse engineering any firmware image is to first assume that the uploaded image has some sort of "filesystem" format.
i.e. there are likely to be a few sections - the main firmware, perhaps another firmware image to be loaded onto the wireless chipset,
The tough part about checksums is that they look like random data. But if you start by looking for numbers that appear to be offset/length pairs, then you'll know you're in the right general area.
To test whether you've found the checksum, first find a place in the image that you can edit with the minimum likelyhood of breaking anything. For example, find some text that's used in one of the html pages. Change an uppercase letter to a lower case one, and then add 0x20 to the checksum, and see if it takes it.
A very interesting read. However, I was surprised to find no comments at all concerning OSX, wrt the future of linux on the desktop. I mean, if anything in the last two years has obviated the need for linux on the desktop, this is it.
It sounds like getting onto the desktop is important to him. He talks about the problems affecting kernel space - poor support from latop hardware mfrs being a big one... but really the kernel is NOT what's holding up the success of linux on the desktop. We need easier setup and a useable interface.
dihydrogen monoxide
Wow... that really sounds deadly. Like the sort of thing you'd find at a refinery or chemical plant.
'With access to this computing power, the students will be able to ship their software files of instructions to the Linux cluster, and it will come back in three or four hours with modeling, lighting and animation
I'm sure glad he didn't use an arcane technical word like "program". That sure would have confused the layman. By the way, how many Libraries of Congress can the cluster store?
If it weren't for Gates and Windows, the net wouldn't be what it is today.
What, you mean a cesspool of vendor-lock-in battles, viruses, worms, and incompatible standards?
In the past few months I became very impressed with the timeliness and quality of NASA's Earth Observatory
In the past few months, I've been impressed with how much of my money the government receives, and as much as I appreciate good science, I'd much rather spend a bit more of that money myself.
Right - and that's the real kicker... if anything you'd think they'd make the modified equipment or the act of modifying it illegal. Instead they're going after the act of just TELLING someone about it. Hello? 1st amendment anyone?
I remember back in the BBS days when this was an big issue with repect to some extremely popular philez such as the anarchist's cookbook. I mean for the love of god, why should it be illegal to just TALK about how to make a weapon?
Now back to my nitroglycerin experiment, which is legal so long as I don't tell anyone how to do it...
May someone please give me a non-obscene definition of the word 'dongles?'
Essentially, anything that dangles.
We're not talking about the rights to the movie. We're talking about ownership of the EQUIPMENT and SOFTWARE to play it. If I want to go buy a DVD from Amazon.com or buy DRM-crippled music from the iTunes Music Store, then I'm free to do so. If I want to buy a DVD player from Fry's or an iPod from Apple, then I'm free to do so.
Suppose I wanted to *lease* a DVD player (like a car) - then the lessor can impose restriction whatever restrictions he wants on me modifying HIS property, and I don't think anyone would find this unreasonable.
However, if I want to modify my DVD player THAT I PAID FOR, FAIR AND SQURE, so I can skip commercials, then I should be free to do so. And if I want to write a program that can play the stuff on the DVD disc THAT I PAID FOR, then I should be free to do so.
We are not asking for NEW allowances. The old copyright law was fine. It's the DMCA that has to go.
Correct me if I'm wrong, but isn't this a plan to ultimately free up the VHF/UHF bands for more useful things, as opposed to consumer stimulus?
I went to Europe a couple months ago, and most of hotels at which I stayed had toilets with a two-button flush. A quick flush for #1 and a more voluminous flush for the larger steaming monkey arms. This seems to solve the problem you've mentioned just fine, and I wouldn't be against environmental regulations to require them.
That's what always gets me about these Microsoft suits. MSFT always says "we're guilty, but don't punish us because it'll hurt our business!" and somehow this is taken as a legitimate argument in every single case. "Willingness" to roll over indeed... that's why is called a fscking SENTENCE... you know, a PUNISHMENT!
The reasons are:
Smaller == cheaper - less materials, less labor.
Smaller == faster - less propagation delay for signals, faster switching time for logic.
Smaller == quieter - lower EMI through shorter transmission lines
Smaller == less power - all of the above add up to less juice spent as heat
Sorry but there is no way computers are getting any bigger. Say goodbyte to those big honking PCI slots because all that stuff is going to get integrated onto one little chip and you'll thank them later when you can buy the whole thing for $50.
Please enlighten me if I am wrong, but isn't "digital PCM" redundant?
While PCM is by definition digital, there are other ways to store and transmit signals digitally.
There's PWM for one... but really I suppose that's more of a D->A mechanism.
As for formats, well, you could store and transmit a fourier transform. Then there's MP3 of course. And FLAC is neat - stores a bunch of predictor coefficient which roughly describe the signal, plus a "residual" stream to make up the difference.
So I guess "Digital PCM" is a bit like a cheese quesadilla... sure there's lots of stuff you can do with cheese, and other additional stuff you can put in a quesadilla. But for the unwashed masses who have no idea what queso is, it's helpful to repeat repeat it.
I've been using Panther in a mixed environment with Jaguar, Cheeta and Puma releases with no fights.
I think there's a job opening for you at the Mirage...
i would venture to say that the steaming pile of horse shit said rose grows in by any other name is still a steaming pile of horse shit
In the beginning was the plan.
And then came the Assumptions.
And the Assumptions were without form.
And the Plan was without substance.
And darkness was upon the face of the Workers.
And they spoke among themselves, saying,
"It is a crock of shit, and it stinketh."
And the Workers went unto their Supervisors and said,
"It is a pail of dung, and none may abide the odor thereof."
And the Supervisors went unto their Managers, saying,
"It is a container of excrement, and it is very strong,
such that none may abide by it."
And the Managers went unto their Directors, saying,
"It is a vessel of fertilizer, and none may abide its strength."
And the Directors spoke amongst themselves, saying one to another,
"It contains that which aids plant growth, and it is very strong."
And the Directors then went unto the Vice-Presidents, saying unto them,
"It promotes growth, and it is very powerful."
And the Vice-Presidents went unto the President, saying unto him,
"This new plan will actively promote the growth and vigor
of the company, with powerful effects."
And the President Looked upon the Plan, and saw that it was good.
And the Plan became Policy.