CP/M didn't keep track of the exact size of a file, just the number of 128-byte blocks allocated to it. This was OK for text files. You knew when you got to the end because you'd read a Ctrl-Z. But binary files could have Control-Zs in them anywhere, so all programs that read/wrote binary files had to store actual size - what should have been metadata - either as a header or in a separate file. Very un-Unix-like. But then, CP/M was a ripoff of RT-11, DEC's LSI-11 starter OS.
Cardionet makes an ambulatory cardiac patient monitor with a chest-worn sensor that transmits heartbeat waveform data to a belt-worn unit over ISM band (range is actually up to 30 feet - useful for when the belt-worn unit is in it's recharger on the nightstand and the patient gets up to use the restroom down the hall). The belt-worn unit, running VxWorks, continuously analyzes the waveform, comparing results with physician-defined thresholds. When a threshold is exceeded the unit communicates with the monitoring center using it's built-in cell phone. It the patient is outside, the built-in GPS tells the ambulance where to find him/her. The monitoring center can contact the physician. The system is in active use today in Philadelphia.
A 7805 voltage regulator in TO-220 package (which appears to be what was used) can deliver, at most, 1 amp. At 5 volts, that's 5 watts max being delivered to the CPUs. And that's when the 7805 has a good heat sink. The 7805, when fed by 12V, must itself dissipate 7 watts as heat. See here. This was rigged.
Some people have addiction issues with MMORPGs. Someone I know exists more 'online' than in our world. He will binge, connected to WoW or Everquest for 20-30 hours at a stretch. Sometimes he and a friend will 'tag team', with one napping while the other 'skills up'. His 'real world' relationships are few and far between - he has very immature social skills, more used to 'bashing a rat for a copper coin or scroll' than 'engaging in a discussion during a meal with others'.
Your PC has a 400W power supply. But that doean't mean it's drawing 400W. That's how much it's capable of supplying. Power supplies are at least 70% efficient. Typical PCs need only 150W continuous - surges when first spinning up cause the drives to suck more for a little while. 150W / 70% = 214W. Of course that's still a Bad Thing(tm).
No, spraypainting this stuff on aluminum foil will cause a short circuit, generating heat. The IR generated by the heat will be absorbed by the coating again, generating more electricity, contributing to the current being fed into the short circuit. This positive feedback will ultimately cause your head to explode!
A piece of crud hanging by a thread or hair from the opening blade of a focal plane shutter in a 35MM film camera will generate a diagonal black streak. Was this picture taken with an SLR?
VHS tape drives for backup was tried, back in 8088-based PC days. They used to advertise them in Byte magazine. They were a little touchy, tho, so they never gained trust, so never gained momentum.
Expecting something for nothing is not a new concept but doesn't scale well. Skipping commercials is a technological response to an economic problem, and won't legitimately work. If we want commercial-free programming, the money's gotta come from someone other than advertisers. While I'd like being able to skip the commercials, and could set up a MythTV box to do so, the economic model can't support everyone doing so.
Until we adopt pay-tv like Great Britain, in the American model of TV economics it's those pesky commercials that pay for the non-premium programming.
Re:Bring back procedural languages
on
Holub on Patterns
·
· Score: 2, Informative
Object Oriented languates/programming wasn't invented for DoD. You're thinking of Ada, which, in it's original incarnation was an Object-based system but didn't support proper inheritance or polymorphism (Ada'82).
OO started with Simula and Smalltalk, with Simula67 being the object oriented base of C++.
And if you don't know what you're doing in a particular paradigm you usually end up with dreck nobody wants to maintain.
I had just received my 80287 floating point coprocessor, which I had saved up for all summer. An hour after installing it and not being able to get the computer to detect it and use it, I realized I'd installed in _backwards_! After the cold sweat dissipated a bit I pried it out and - what the hell, nothing to lose at this point - plugged it in right. It still worked. I put a candle on the Murphy altar that night.
HP made a pulse injector for troubleshooting that would send one pulse if it's button was pressed, pulses at a 1Hz rate if held down, at a 100Hz rate if pressed then held down, and 1000Hz rate if pressed twice then held down. It was a handheld device.
I worked as a tech on General Atomic's Double III fusion reactor project in San Diego for about 2 years. The magnetic containment and ohmic heating coils put out ~240 KiloGauss during a 'burn'. The displays on all the CRTs in the control room would collapse due to the huge magnetic field. No one I knew experienced _any_ effects. I just laugh when I see the late nite TV ads for magnetic 'healing' bracelets.
Slashdot Mirror
Steve Ciarcia left Byte and started his own rag: Circuit Cellar Ink. It was in my opinion the beginning of the end for Byte (as a serious hacker mag).
CP/M didn't keep track of the exact size of a file, just the number of 128-byte blocks allocated to it. This was OK for text files. You knew when you got to the end because you'd read a Ctrl-Z. But binary files could have Control-Zs in them anywhere, so all programs that read/wrote binary files had to store actual size - what should have been metadata - either as a header or in a separate file. Very un-Unix-like. But then, CP/M was a ripoff of RT-11, DEC's LSI-11 starter OS.
...and mission control will be set up in an extinct volcanic crater near Mount Fuji.
Cardionet makes an ambulatory cardiac patient monitor with a chest-worn sensor that transmits heartbeat waveform data to a belt-worn unit over ISM band (range is actually up to 30 feet - useful for when the belt-worn unit is in it's recharger on the nightstand and the patient gets up to use the restroom down the hall).
The belt-worn unit, running VxWorks, continuously analyzes the waveform, comparing results with physician-defined thresholds. When a threshold is exceeded the unit communicates with the monitoring center using it's built-in cell phone. It the patient is outside, the built-in GPS tells the ambulance where to find him/her. The monitoring center can contact the physician. The system is in active use today in Philadelphia.
A 7805 voltage regulator in TO-220 package (which appears to be what was used) can deliver, at most, 1 amp. At 5 volts, that's 5 watts max being delivered to the CPUs. And that's when the 7805 has a good heat sink. The 7805, when fed by 12V, must itself dissipate 7 watts as heat. See here. This was rigged.
If your program _only_ relies on gcc it must be a text-based app - X calls don't work on Windows and MFC libs aren't available for Linux.
Java comes with portable GUI libs.
Some people have addiction issues with MMORPGs. Someone I know exists more 'online' than in our world. He will binge, connected to WoW or Everquest for 20-30 hours at a stretch. Sometimes he and a friend will 'tag team', with one napping while the other 'skills up'. His 'real world' relationships are few and far between - he has very immature social skills, more used to 'bashing a rat for a copper coin or scroll' than 'engaging in a discussion during a meal with others'.
Your PC has a 400W power supply. But that doean't mean it's drawing 400W. That's how much it's capable of supplying. Power supplies are at least 70% efficient. Typical PCs need only 150W continuous - surges when first spinning up cause the drives to suck more for a little while. 150W / 70% = 214W. Of course that's still a Bad Thing(tm).
No, spraypainting this stuff on aluminum foil will cause a short circuit, generating heat. The IR generated by the heat will be absorbed by the coating again, generating more electricity, contributing to the current being fed into the short circuit. This positive feedback will ultimately cause your head to explode!
TI didn't make the TRS80, of course. That was Radio Shack.
450,000 CLR instructions, I'd guess. Each of these would chew through many ARM assembly instructions.
Sir Tony Hoare was the source of that quote, actually. Donald Knuth paraphresed it, but didn't originate it.
A piece of crud hanging by a thread or hair from the opening blade of a focal plane shutter in a 35MM film camera will generate a diagonal black streak. Was this picture taken with an SLR?
It may slow distribution of spam, but one of the motivations for eliminating spam in the first place was reduction of bandwidth consumption.
VHS tape drives for backup was tried, back in 8088-based PC days. They used to advertise them in Byte magazine. They were a little touchy, tho, so they never gained trust, so never gained momentum.
... to do their first deployment.
Expecting something for nothing is not a new concept but doesn't scale well. Skipping commercials is a technological response to an economic problem, and won't legitimately work. If we want commercial-free programming, the money's gotta come from someone other than advertisers. While I'd like being able to skip the commercials, and could set up a MythTV box to do so, the economic model can't support everyone doing so.
Until we adopt pay-tv like Great Britain, in the American model of TV economics it's those pesky commercials that pay for the non-premium programming.
Object Oriented languates/programming wasn't invented for DoD. You're thinking of Ada, which, in it's original incarnation was an Object-based system but didn't support proper inheritance or polymorphism (Ada'82).
OO started with Simula and Smalltalk, with Simula67 being the object oriented base of C++.
And if you don't know what you're doing in a particular paradigm you usually end up with dreck nobody wants to maintain.
BTW, "You can't eat your cake and have it too." was the phrase that tripped up the unabomber.
.... If you lived here, you'd be home by now.
Actually, the AVR line, from 4414 up, provides for adding external RAM.
I had just received my 80287 floating point coprocessor, which I had saved up for all summer. An hour after installing it and not being able to get the computer to detect it and use it, I realized I'd installed in _backwards_! After the cold sweat dissipated a bit I pried it out and - what the hell, nothing to lose at this point - plugged it in right. It still worked. I put a candle on the Murphy altar that night.
Bram Moolenaar, author of VIM, may have some info on what would be useful in Uganda.
HP made a pulse injector for troubleshooting that would send one pulse if it's button was pressed, pulses at a 1Hz rate if held down, at a 100Hz rate if pressed then held down, and 1000Hz rate if pressed twice then held down. It was a handheld device.
I worked as a tech on General Atomic's Double III fusion reactor project in San Diego for about 2 years. The magnetic containment and ohmic heating coils put out ~240 KiloGauss during a 'burn'. The displays on all the CRTs in the control room would collapse due to the huge magnetic field. No one I knew experienced _any_ effects. I just laugh when I see the late nite TV ads for magnetic 'healing' bracelets.