Thanks... this is what I was actually looking for, but kept running into those damn chocolate mice. parent's link. Too bad it's only one "stripe", but still neat.
A good measure of reliability would be to find the temperature of the hottest component. Usually you can guess it'll be the transistors with the heatsinks, so you can stick a few thermocouples in there, close it back up (must keep airflow as the manufacturer intended), and run it for a while.
Besides the environment*, heat is the other biggest killer.
(* I was doing the mil-hdblk-217 reliability measurements, where the environment ranged from lab to carrier-based-fighter-jet-externally-mounted. I think vibration in most pc's won't be as severe!)
Headline from your linked website: MCE 2X DVD-R/RW with DVD-RAM Internal Upgrade for PowerBook G4 Burn DVDs (at 2X) and CDs anywhere you can take your PowerBook... (And, it's compatible with iDVD!)
I'm hoping they just updated the website to include that!
There are a lot of companies that use supercomputers, although maybe not the type you're thinking of. Of course, there are the number-crunchers: oil companies are big users (to crunch data & find new oil), and car companies (BMW). But there are also the transaction-processors, like SprintPCS and Ebay (used to be in the top 500), that make the list just by the sheer number of connected processors.
Not the start of a holy war, but I like RPN because it eliminates the use of parenthesis (sp.). It also lets you build answers from the inside-out & see the intermediate answers better. Lastly, you can save intermediate answers on the stack as a scratchpad memory. RPN is sucky to learn on a one-line display, but it's great on the 4-line hp48.
The hp can do algebraic, but you have to use the single-quote key to make it a string, and then hit EVAL to answer it. It's customizable enough so that you could probably make the ENTER key add the quote and do the EVAL, but hp would do good to make algebraic it's own mode. And TI would do well to add RPN, too.
That's the same resolution on the original 48SX, and it sucked in '89. Battery life is paramount (what good is a calculator if you have to worry about the batteries?), so color is out. But how about 2x the resolution? The 48SX was slow enough that it couldn't handle filling a higher resolution screen (2x the calculations), but now with more processing power, I don't see why they don't up it.
Of course, trasflective light with optional backlight would be cool, too (maybe with a dedicated battery)...and if they could eliminate the flicker the 48 has under flourescent lights (duh... most schools and offices use it!), that would be cool, too.
The HP syntax is great & efficient! I haven't tried the TI's, but the HP is totally engineer/programmer-oriented (although does have a steep learning curve, and it would suck for non-engineers). I'm an RPN user for life, and not just because it means that no one asks to borrow my calculator.
Here is a heatsink material that is 2000W/m*K (4.8 times that of silver, 5.1 times of copper). It's a heatpipe-like material, but in sheet form. It would be ideal for laptops, or as the web page says, sushi.
I just rushed out to the store and got their catalog. I'll just transcribe the best parts:
New! Available in June in selected areas - Delete & Retake last shot - self timer - Return the camera to Ritz Camera or Wolf Camera and get: -- 25 hires prints -- index print -- Your pictures on a Big-e CD
$10.99 Camera Only Digiprint processing package: $10.99 (Frequent Foto Benefits not applicable)
Avalable at selected stores in the following areas: Atlanta, Baltimore, Boston, Birmingham, Chicago, Dallas, North Carolina, Philadelphia, San Francisco, Tenessee, Washington DC.
I talked to the lady in the store, and she said that only the stores with a Pioneer system would be able to process it (whatever that is). There was only one store in the RTP area that had this, and they were already closed at 7:45 pm.
Culturecom Holdings Ltd., a publisher of Chinese language "fighting" comics that migrated into information technology in the 1990s, has begun selling its V-Dragon microprocessor for use in Chinese PCs.
I've been following adbusters for a number of years... I browse the magazines at borders, etc., but I agree that they go about things the wrong way.
One of their adverts describes how much an average american consumes versus the consumption rates of 3rd world nations.. it's an interesting statistic, but it so oversimplifies things that it's useless trolling... if you follow their argument, then you'll probably find that americans consume more because they produce more (i have to buy a computer, but I can do a lot more with it than I could a pencil and paper), and (I'm guessing) we're more efficient (my laptop can run a bank, replacing a number of accountants, and the logical conclusion of their statistic is that we should kill everyone in 3rd world countries because we can do things more efficiently!
But, hopefully, people are able to look at things beyond a single measure (consumption per capita) and judge situations for themselves. I think some adbusters ads do a great disservice.
I do like their buy-nothing day and tv-turn-off week, but I don't like their holier-than-thou attitude that "the masses" would find these deplorable.
Summary: worth reading every once in a while, worth supporting, not worth modeling my life after their goals. But that's just me.
First, I don't see a protection diode on that relay. You need a diode that will be normally reverse-biased on the coil... otherwise, when the relay clicks off, the inductance of the coil will kick back enough voltage to blow out the 555. It's a reliability issue.
Second, the 555 is a nice analog circuit that's rated for 4.5-15 volts, so no need to use a 7805 voltage regulator; you can connect to the battery directly.
Third, a battery idea: Radioshack has some 12 volt batteries that are about N-size (sub AA). They are typically used for lighters, pagers, or remotes.
Lastly, as you mentioned, the ultimate would be to get rid of the relay and connect directly to the camera. The CMOS version of the 555 would be ideal because (1) it's low power, so you might be able to drive if from the camera's step-up power supply and (2) it has a FET output, so it'll drive much closer the the GND&VCC rails than the TTL version (this should help compatibility)
A heatsink may not be the best way to go... laptops are actually designed to keep the case somewhat insulated (at least the good ones that don't burn your lap are).
Probably much better would be to add an auxillary fan to the exisiting small fan. The massive increase in airflow would be more of a help than trying to decrease the ambient temperature. You could use a case fan and custom-made ducting.
The hard drive would have to be handled differently - my inspiron 8000 keeps it stuffed into a little confined area & it gets really hot... harddrive ventilation holes may need to be added.
I'd pick a laptop with lots of ventilation holes & plan on sucking a whole lot of air out of them.
the heathkit cantenna wasn't really an antenna... it was a dummy load for testing transmitters. The signal was safely disapated into the oil, not the air. Same name, but different purposes.
Besides, it was never registered as a trademark by Heathkit (ah, the simpler days!), or any other company.
Slashdot Mirror
The IOC you to it: drug testing for bridge players. What's next - chess drug testing?
It's square instead of rectangular. It's too short (3.0" long) to fit a 1.8" drive (3.37" long).
Ian Clarke announced in this slashdot comment that he's leaving the US. Here's the story at boing boing.
and park the car in the basement.
Thanks... this is what I was actually looking for, but kept running into those damn chocolate mice. parent's link. Too bad it's only one "stripe", but still neat.
RioKarma 20:
20G 2.7 x 3.0 x 0.90 = 7.29 inch^3 5.5oz
ipod specs
10G 4.1 x 2.4 x 0.62 = 6.10 inch^3 5.6oz
15G 4.1 x 2.4 x 0.62 = 6.10 inch^3 5.6oz
30G 4.1 x 2.4 x 0.73 = 7.18 inch^3 6.2oz
So it's pretty comprable size-wise and breaks from the pcmcia 1.8" hard drive mold (0.20" x 2.13" x 3.37") that defines the ipod.
Cool! I found a picture of those striped mice. Some more pictures:
Closeup before eyes are formed.
In-vitro development in the lab.
Displaying remarkable inteligence as they swarm and are about to devour their much-bigger and unsuspecting prey (apparently striped mice are carnivorous)
Slashdot's dupe bug hasn't seemed to brought /. crashing down yet... And they haven't even figured out how to remove the dupes!
Nope, Dolly was put down when her viral infection got too bad. This type of infection is not unusual to find in sheep that live indoors, as Dolly did.
... I wonder how this horse's telomere will turn out.
True, dolly had short telomeres. But what's far more interesting is that cloned cattle don't have shortened telomeres
A good measure of reliability would be to find the temperature of the hottest component. Usually you can guess it'll be the transistors with the heatsinks, so you can stick a few thermocouples in there, close it back up (must keep airflow as the manufacturer intended), and run it for a while.
Besides the environment*, heat is the other biggest killer.
(* I was doing the mil-hdblk-217 reliability measurements, where the environment ranged from lab to carrier-based-fighter-jet-externally-mounted. I think vibration in most pc's won't be as severe!)
Headline from your linked website: MCE 2X DVD-R/RW with DVD-RAM Internal Upgrade for PowerBook G4 Burn DVDs (at 2X) and CDs anywhere you can take your PowerBook... (And, it's compatible with iDVD!)
I'm hoping they just updated the website to include that!
From this site, you can see the breakdown by organization:There are a lot of companies that use supercomputers, although maybe not the type you're thinking of. Of course, there are the number-crunchers: oil companies are big users (to crunch data & find new oil), and car companies (BMW). But there are also the transaction-processors, like SprintPCS and Ebay (used to be in the top 500), that make the list just by the sheer number of connected processors.
Here's the latest list
Not the start of a holy war, but I like RPN because it eliminates the use of parenthesis (sp.). It also lets you build answers from the inside-out & see the intermediate answers better. Lastly, you can save intermediate answers on the stack as a scratchpad memory. RPN is sucky to learn on a one-line display, but it's great on the 4-line hp48.
The hp can do algebraic, but you have to use the single-quote key to make it a string, and then hit EVAL to answer it. It's customizable enough so that you could probably make the ENTER key add the quote and do the EVAL, but hp would do good to make algebraic it's own mode. And TI would do well to add RPN, too.
That's the same resolution on the original 48SX, and it sucked in '89. Battery life is paramount (what good is a calculator if you have to worry about the batteries?), so color is out. But how about 2x the resolution? The 48SX was slow enough that it couldn't handle filling a higher resolution screen (2x the calculations), but now with more processing power, I don't see why they don't up it.
..and if they could eliminate the flicker the 48 has under flourescent lights (duh... most schools and offices use it!), that would be cool, too.
Of course, trasflective light with optional backlight would be cool, too (maybe with a dedicated battery).
The HP syntax is great & efficient! I haven't tried the TI's, but the HP is totally engineer/programmer-oriented (although does have a steep learning curve, and it would suck for non-engineers). I'm an RPN user for life, and not just because it means that no one asks to borrow my calculator.
Here is a heatsink material that is 2000W/m*K (4.8 times that of silver, 5.1 times of copper). It's a heatpipe-like material, but in sheet form. It would be ideal for laptops, or as the web page says, sushi.
I just rushed out to the store and got their catalog. I'll just transcribe the best parts:
New! Available in June in selected areas
- Delete & Retake last shot
- self timer
- Return the camera to Ritz Camera or Wolf Camera and get:
-- 25 hires prints
-- index print
-- Your pictures on a Big-e CD
$10.99 Camera Only
Digiprint processing package: $10.99 (Frequent Foto Benefits not applicable)
Avalable at selected stores in the following areas: Atlanta, Baltimore, Boston, Birmingham, Chicago, Dallas, North Carolina, Philadelphia, San Francisco, Tenessee, Washington DC.
I talked to the lady in the store, and she said that only the stores with a Pioneer system would be able to process it (whatever that is). There was only one store in the RTP area that had this, and they were already closed at 7:45 pm.
4. Tending to intrude or encroach, as upon privacy.
If there is anything that should be private, it should be one's own thoughts. Attempting to read these is invasive.
EETimes has an article on this. They note:
Culturecom Holdings Ltd., a publisher of Chinese language "fighting" comics that migrated into information technology in the 1990s, has begun selling its V-Dragon microprocessor for use in Chinese PCs.
That's almost like vivendi-universal going from a water utility to a multimedia giant! Is there some new business strategy for totally changing industries that I should be aware of?
They also note:
The V-Dragon CPU incorporates support for Chinese-language characters, according to the company.
Wow, I wonder what that means... optimized U16 support? Or is it marketing-speak?
EEtimes also notes that 300,000 chips have already been sold or have letters of intent to be sold.
CDC blames AIDS on the internet
doh! that link is too closely related to my sig...
I've been following adbusters for a number of years... I browse the magazines at borders, etc., but I agree that they go about things the wrong way.
.. it's an interesting statistic, but it so oversimplifies things that it's useless trolling... if you follow their argument, then you'll probably find that americans consume more because they produce more (i have to buy a computer, but I can do a lot more with it than I could a pencil and paper), and (I'm guessing) we're more efficient (my laptop can run a bank, replacing a number of accountants, and the logical conclusion of their statistic is that we should kill everyone in 3rd world countries because we can do things more efficiently!
One of their adverts describes how much an average american consumes versus the consumption rates of 3rd world nations
But, hopefully, people are able to look at things beyond a single measure (consumption per capita) and judge situations for themselves. I think some adbusters ads do a great disservice.
I do like their buy-nothing day and tv-turn-off week, but I don't like their holier-than-thou attitude that "the masses" would find these deplorable.
Summary: worth reading every once in a while, worth supporting, not worth modeling my life after their goals. But that's just me.
Adbusters is working on a design for an opensource version of this. It appeared in the previous issue & they've gotten some feedback.
Ok, I'm an EE so I need to offer some advice...
First, I don't see a protection diode on that relay. You need a diode that will be normally reverse-biased on the coil... otherwise, when the relay clicks off, the inductance of the coil will kick back enough voltage to blow out the 555. It's a reliability issue.
Second, the 555 is a nice analog circuit that's rated for 4.5-15 volts, so no need to use a 7805 voltage regulator; you can connect to the battery directly.
Third, a battery idea: Radioshack has some 12 volt batteries that are about N-size (sub AA). They are typically used for lighters, pagers, or remotes.
Lastly, as you mentioned, the ultimate would be to get rid of the relay and connect directly to the camera. The CMOS version of the 555 would be ideal because (1) it's low power, so you might be able to drive if from the camera's step-up power supply and (2) it has a FET output, so it'll drive much closer the the GND&VCC rails than the TTL version (this should help compatibility)
Good luck, and nice photos!
A heatsink may not be the best way to go... laptops are actually designed to keep the case somewhat insulated (at least the good ones that don't burn your lap are).
Probably much better would be to add an auxillary fan to the exisiting small fan. The massive increase in airflow would be more of a help than trying to decrease the ambient temperature. You could use a case fan and custom-made ducting.
The hard drive would have to be handled differently - my inspiron 8000 keeps it stuffed into a little confined area & it gets really hot... harddrive ventilation holes may need to be added.
I'd pick a laptop with lots of ventilation holes & plan on sucking a whole lot of air out of them.
the heathkit cantenna wasn't really an antenna ... it was a dummy load for testing transmitters. The signal was safely disapated into the oil, not the air. Same name, but different purposes.
Besides, it was never registered as a trademark by Heathkit (ah, the simpler days!), or any other company.
Let's hope I can't use sprint PCS's phone in the park!