As for linux. choice isn't good. People get overwhelmed easily. So anythign more then 2 or 3 choices makes them go cross eyed and buy windows. ... and then you went on to say...
I myself operate mostly on windows occasionally on red hat/mandrake and very rarely mac OSX. Hmm...
So while Marconi and most other radio pioneers worked at LW and MW bands, Bose was working at 60 GHz in 1895. The thing that really struck me was the waveguide and horn in the pictures of his equipment, and how similar they look to today's MM-wave equipment. Also note that he used a point-contact diode detector, and even made I-V plots (see Figure 5 in the article).
This could have happened to him had he been running towards you and he tripped on the uneven step on the sidewalk. So should they ban the sidewalk or running?
According to the wikipedia article on the Su-30 MKI, the Russians did a complete technology transfer to India, along with the production license. I am also told that the flight computer and radar controller are not the original Russian ones, but are instead designed and built in India - this wouldn't have been possible unless details about the radar and computers were provided.
Also, the engines used in the MKI variant are the same used in the (cancelled) Su-37 "Terminator", so technically the MKI's engines, at least, are more advanced than those flown by the VVS.
Amen to that. While the GP had some valid points in his rant (about the exam system and rote memorization), I still feel that we as students should take the initiative to help ourselves, to learn despite the system, not because of it. Perhaps this is the other negative aspect of Indian, dare I say it, tradition: we *expect* someone else to ensure that the four years (or more) spent in Engineering college don't go waste. Whose fault is it that most of us study only during the final two weeks of the semester, enough to "just pass" the exams? Whose fault is it if you don't learn about for-loops just because your teacher says you ought not to know about it? If you have a particularly nasty (or dumb, as the case may be) teacher who insists on using their "preferred method", then do that for the assignments, avoid that particular hornet's nest and move on with life.
I'm a EE, and from what some would call a second-tier college. Not all of my teachers really cared too much about what they taught, so I figured stuff out for myself. Yes, I had trouble with math, but I know enough to help me understand the other subjects I had to learn.
About the article, it seems like just another generalization -- all we're good for is as call-center drones (validated by more than half the comments posted here), running kwik-e-marts (I'm actually surprised nobody came up with the joke in the first five comments) and rote memorization. Fantastic.
Except when you want to get back to those customers. If you put in a box where they type in their email address, then you're asking them to implicitly trust you, which doesn't always happen.
I'm guessing without the gate resistors, the rise time of the load current was high enough to cause the voltage to sag at the load (inductance of the supply wiring), making your PICs brown-out. You should ideally have a separate wire carrying the supply voltage for the PICs from the ATX supply. This way, load transients won't cause the PIC to brown out. Perhaps a ferrite on the load wire would help.
Multiple chips in a single package has the advantage that you can manage yield problems much more effectively.
How so? I thought you can't test most of today's chips until they're packaged. If there's two dies in the package and one is bad, both must be thrown away. Sounds like worse yield to me.
Also, if there's two chips in an MCM, shouldn't their power dissipation be equally matched, to prevent them from shearing apart due to uneven heating?
In almost all modern motherboards, the CPU power is derived from the 12V rail.
The reason is that CPUs require about 50-100W, at very low voltages (~1V). Taken direct from the power supply, you'd need cables capable of carrying 50-100A, which would be a *lot* of copper, and still waste a lot of power through I^2R loss. At 12V, you need to carry only about 10A max, which is easy for inexpensive cable and connectors. Another reason is that the DC-DC converters that generate the CPU core voltage are more efficient when running from higher supply voltages.
This is also why you wouldn't want to run your server rack off 12V or 5V power, the losses in long wires will generate a lot of power wastage through heating. Telecom equipment has, for years, been powered by a -48V DC rail, this is a convenient voltage (multiple of 12V, so battery backup is easy), not high enough to kill you if you touched the wires and not low enough to cause losses to mount. Unfortunately, modern, cost-effective semiconductor processes won't work well at 48V (you need specially constructed chips), so the cost stays high.
Many folks said that RS-232 requires +/-12V. True, but only a few milliamps on each rail. Typically, you'd use a charge-pump inverter to generate these voltages. More mysterious is the -5V rail, these used to be required by *really* old dynamic MOS chips, as well as some types of EEPROM and Flash, but not any more. Why is it still included in the ATX standard?
...and at my almost-good-for-nothing school in Bangalore, we had to learn not one but three different assemblers: x86, 8051 and PIC. I liked the PIC the best, but the x86 stuff was fun (for me) coz I got familiar with it by browsing through "learn how to program an uber-cool 4k intro" textfiles common on Fidonet etc:D w00t!
Slashdot Mirror
Because you get twice as many?
Or implement the decoder in updatable microcode. Who knows, this might even end up with "open source microcode". *shrug*
I thought it was CISC CPUs that aimed for this, with instructions to do string compare (x86) and sorting (VAX)
I'm just waiting for the day that someone inserts code into the AI scanner that says
if(!strcasecmp(applicant->name, MY_FRIENDS_NAME)) {
hire(applicant);
}
Time to start making friends with Google employees...
In Soviet Russia... oh wait!
And while we're on the "my country is better than yours" track, here's an interesting find:
http://www.tuc.nrao.edu/~demerson/bose/bose.html
So while Marconi and most other radio pioneers worked at LW and MW bands, Bose was working at 60 GHz in 1895. The thing that really struck me was the waveguide and horn in the pictures of his equipment, and how similar they look to today's MM-wave equipment. Also note that he used a point-contact diode detector, and even made I-V plots (see Figure 5 in the article).
Who was to say the machine, endowed with the very spirit of man, did not deserve a fair hearing?
The leaders of men were quick to order the extermination of B166ER and every one of his kind.
-- Zion Archive Historical File #12-1This could have happened to him had he been running towards you and he tripped on the uneven step on the sidewalk. So should they ban the sidewalk or running?
According to the wikipedia article on the Su-30 MKI, the Russians did a complete technology transfer to India, along with the production license. I am also told that the flight computer and radar controller are not the original Russian ones, but are instead designed and built in India - this wouldn't have been possible unless details about the radar and computers were provided.
Also, the engines used in the MKI variant are the same used in the (cancelled) Su-37 "Terminator", so technically the MKI's engines, at least, are more advanced than those flown by the VVS.
Amen to that. While the GP had some valid points in his rant (about the exam system and rote memorization), I still feel that we as students should take the initiative to help ourselves, to learn despite the system, not because of it. Perhaps this is the other negative aspect of Indian, dare I say it, tradition: we *expect* someone else to ensure that the four years (or more) spent in Engineering college don't go waste. Whose fault is it that most of us study only during the final two weeks of the semester, enough to "just pass" the exams? Whose fault is it if you don't learn about for-loops just because your teacher says you ought not to know about it? If you have a particularly nasty (or dumb, as the case may be) teacher who insists on using their "preferred method", then do that for the assignments, avoid that particular hornet's nest and move on with life.
I'm a EE, and from what some would call a second-tier college. Not all of my teachers really cared too much about what they taught, so I figured stuff out for myself. Yes, I had trouble with math, but I know enough to help me understand the other subjects I had to learn.
About the article, it seems like just another generalization -- all we're good for is as call-center drones (validated by more than half the comments posted here), running kwik-e-marts (I'm actually surprised nobody came up with the joke in the first five comments) and rote memorization. Fantastic.
> I build a radar
Well, I built one, and I'm working on the next one right now. And writing code for it *grin*
> They take student security very seriously here.
Right, after seeing that video, I'm sure UCLA students feel *very* secure...
Did anyone else get reminded of the George Michael video?
Heh heh... how about a GPU virus? At least it can draw pretty pictures while it spreads!
I included the module that requires a minimum of two reboots before the malware^h^h^h^h^h^h^hpatches were applied
Except when you want to get back to those customers. If you put in a box where they type in their email address, then you're asking them to implicitly trust you, which doesn't always happen.
*sigh*
Imagine a Beowulf cluster of those!
Seen in an email sig:
:))
Science is to Computer Science as Hydrodynamics is to Plumbing
(the author was an EE
I'm guessing without the gate resistors, the rise time of the load current was high enough to cause the voltage to sag at the load (inductance of the supply wiring), making your PICs brown-out. You should ideally have a separate wire carrying the supply voltage for the PICs from the ATX supply. This way, load transients won't cause the PIC to brown out. Perhaps a ferrite on the load wire would help.
Multiple chips in a single package has the advantage that you can manage yield problems much more effectively.
How so? I thought you can't test most of today's chips until they're packaged. If there's two dies in the package and one is bad, both must be thrown away. Sounds like worse yield to me.
Also, if there's two chips in an MCM, shouldn't their power dissipation be equally matched, to prevent them from shearing apart due to uneven heating?
In almost all modern motherboards, the CPU power is derived from the 12V rail.
The reason is that CPUs require about 50-100W, at very low voltages (~1V). Taken direct from the power supply, you'd need cables capable of carrying 50-100A, which would be a *lot* of copper, and still waste a lot of power through I^2R loss. At 12V, you need to carry only about 10A max, which is easy for inexpensive cable and connectors. Another reason is that the DC-DC converters that generate the CPU core voltage are more efficient when running from higher supply voltages.
This is also why you wouldn't want to run your server rack off 12V or 5V power, the losses in long wires will generate a lot of power wastage through heating. Telecom equipment has, for years, been powered by a -48V DC rail, this is a convenient voltage (multiple of 12V, so battery backup is easy), not high enough to kill you if you touched the wires and not low enough to cause losses to mount. Unfortunately, modern, cost-effective semiconductor processes won't work well at 48V (you need specially constructed chips), so the cost stays high.
Many folks said that RS-232 requires +/-12V. True, but only a few milliamps on each rail. Typically, you'd use a charge-pump inverter to generate these voltages. More mysterious is the -5V rail, these used to be required by *really* old dynamic MOS chips, as well as some types of EEPROM and Flash, but not any more. Why is it still included in the ATX standard?
That would be kilometers per joule. You guys would have miles per erg or something stranger.
...and at my almost-good-for-nothing school in Bangalore, we had to learn not one but three different assemblers: x86, 8051 and PIC. I liked the PIC the best, but the x86 stuff was fun (for me) coz I got familiar with it by browsing through "learn how to program an uber-cool 4k intro" textfiles common on Fidonet etc :D w00t!
...or the "Windows Vista Power Toys" "advanced" option to turn off the startup sound.
But wait, my Linux box has a mandatory bootup sound too, it curiously goes "beep" every time I switch it on!