Read Joint Strike Fighter coding guidelines, and then come back and lets discuss this again. Or any embedded C++ reference material.
C++ doesnt produce bloat, programmers do. I work with embedded systems often, in some instances with few tens of KBs of RAM available, sometimes even way less and i have rarely encountered a task where C code would be desirable, except where you are fitting in a piece of functionality between predefined C-like interfaces. Assembler, yes, for these few performance-critical routines and the app happens to be cpu performance bound ( most arent ) , but not C.
c++ is better though, and i sincerely hope that the world is moving towards c++ based interfaces ( some opsyses already do, like Symbian and a few RTOSes ive come across )
Even for really lowlevel stuff, like 8-bit MCU programming i prefer c++ over C these days ( exceptions off, rtti off ) due do simple constructs like wrapping resource locks etc. and templates save the day more often than C practice of preprocessor macros.
NASA is about to follow up with its own, mid-2009 # LRO - around half a billion ?
China and Japan have announced followup lander missions as well, and there is Google Lunar X-Prize card too, so the next lunar landing will be likely be done by one of these parties ( The last one was by USSR, back in 1976 )
Moon, while basically neglected for past few decades ( with notable exceptions of ESA Smart-1 and american low-budget Clementine and Lunar Prospector ), is about to get quite crowded.
My thinkpad could fit two modules on top of its lid. Thats roughly 1.5 watts delivered, whereas in normal usage my Tpad draws around 10W. around 2 watts more with Wifi.
So your solar cells would prolong the battery life by around 10-15% in ideal conditions.
I have, a while back. I also have used tools like Lauterbach, Realview stuff, kd and windbg and various other lowlevel debugging gizmos. More often than not, a simple objdump does the trick.
So you are saying that sending robots to Shackleton crater to search for water ice, or sending prototype plants to test out ISRU technologies like cooking oxygen out of lunar regolith would be rather pointless, just because a bunch of astronauts already made some footprints there ?
I am not disputing the accomplishments of Apollo, but to say that lunar robots are pointless is naive.
By the way, looking at the launch calendars, it looks like Indo-Russian joint mission Chandrayaan II might beat GLXP to the lunar surface.
Its been sad that our closest neighbour has been basically forgotten for so long, and now with Chinese, Indians and Japanese entering the lunar exploration, things are looking up.
Yes, Mars they are doing. But do you remember when the last lunar soft landing happened ? 1976, Luna-24, a successful sample return probe sent by USSR.
There is a likelyhood that the next one to land will be a Google Lunar X-Prize participant..
"The mass of the panels themselves quickly start to become a major issue as you scale up the thrust to make them useful,"
Thin film cells. They havent been flown in space yet apart from FTSCE/MISSE-5 tests, but you can get pretty good power to weight ratios with them, IIRC around 2KW/kg has been achievable.
I wouldnt have a comprehensive answer, but most end-user oriented stuff that i have tried recently ( random-buntus, Mandriva, suse ) supply a few different stock builds of "blinkin-lights" kernels.
A small update of the nice financial situation : General Motors was trading below $5, with market cap of less than 3bn. Its balance sheet shows -55bn negative equity, meaning essentially it should be bankrupt already.
Back in 1998, this stock was above $90, they had a working EV and a series hybrid version of it.
Dude, in which world is COM deprecated ? Effectively most of Windows system programming ( plug-ins, filters, extensions yada yada, especially the parts that concern shell, explorer or IE extensions ) are all exposed through COM intefacts still. In some cases we still have simple C interfaces like for device drivers, and a lot of security or crypto related stuff.
So WDYM deprecated ?
Slashdot Mirror
Read Joint Strike Fighter coding guidelines, and then come back and lets discuss this again. Or any embedded C++ reference material.
C++ doesnt produce bloat, programmers do.
I work with embedded systems often, in some instances with few tens of KBs of RAM available, sometimes even way less and i have rarely encountered a task where C code would be desirable, except where you are fitting in a piece of functionality between predefined C-like interfaces.
Assembler, yes, for these few performance-critical routines and the app happens to be cpu performance bound ( most arent ) , but not C.
c++ is better though, and i sincerely hope that the world is moving towards c++ based interfaces ( some opsyses already do, like Symbian and a few RTOSes ive come across )
Even for really lowlevel stuff, like 8-bit MCU programming i prefer c++ over C these days ( exceptions off, rtti off ) due do simple constructs like wrapping resource locks etc. and templates save the day more often than C practice of preprocessor macros.
In short, i favour simpler, cleaner code.
Yes, Kayuga imaged Apollo 15 and 17 landing sites back in February
http://www.spaceentrepreneurs.org/profiles/blog/show?id=1369058%3ABlogPost%3A11443
There are currently three spacecraft orbiting the moon. Japanese Kayuga/Selene, Chinese Chang'e and now Chandrayaan. Approximate budgets:
# Chandrayaan-I (India) - $86m
# Chang'e (China) - $187m
# Kayuga (Japan) - $480m
NASA is about to follow up with its own, mid-2009
# LRO - around half a billion ?
China and Japan have announced followup lander missions as well, and there is Google Lunar X-Prize card too, so the next lunar landing will be likely be done by one of these parties ( The last one was by USSR, back in 1976 )
Moon, while basically neglected for past few decades ( with notable exceptions of ESA Smart-1 and american low-budget Clementine and Lunar Prospector ), is about to get quite crowded.
spoken like a true fanboy !
Why would a guy who is just learning to get online, himself, care ?
sorry i forgot to qualify that with "for late friday afternoons only" or "early 5 o clock hackoramas"
sl -l
google is your friend. "thinkpad watts usage" will turn up a lot of references. Last time i booted windows on it, it was showing around 8 watts draw.
http://www.powerfilmsolar.com/products/oem_components/modspecs/rc7275psa.htm
My thinkpad could fit two modules on top of its lid.
Thats roughly 1.5 watts delivered, whereas in normal usage my Tpad draws around 10W. around 2 watts more with Wifi.
So your solar cells would prolong the battery life by around 10-15% in ideal conditions.
Try laptops, multiple monitors, TVout, resolution switching and .. oh, 3D
I have, a while back. I also have used tools like Lauterbach, Realview stuff, kd and windbg and various other lowlevel debugging gizmos.
More often than not, a simple objdump does the trick.
meh, objdump -dCS, nm -C, readelf and binutils in general get the job done for me more often than not, and across various CPU architectures. fyr free.
Yes, everyone paying the slightest attention to space developments knows about Chandrayaan I, and it being an Indian effort.
I specifically said that Chandrayaan II will be an indo-russian mission, with lander and rover being provided by Roskosmos.
So you are saying that sending robots to Shackleton crater to search for water ice, or sending prototype plants to test out ISRU technologies like cooking oxygen out of lunar regolith would be rather pointless, just because a bunch of astronauts already made some footprints there ?
I am not disputing the accomplishments of Apollo, but to say that lunar robots are pointless is naive.
By the way, looking at the launch calendars, it looks like Indo-Russian joint mission Chandrayaan II might beat GLXP to the lunar surface.
Its been sad that our closest neighbour has been basically forgotten for so long, and now with Chinese, Indians and Japanese entering the lunar exploration, things are looking up.
Yes, Mars they are doing. But do you remember when the last lunar soft landing happened ?
1976, Luna-24, a successful sample return probe sent by USSR.
There is a likelyhood that the next one to land will be a Google Lunar X-Prize participant ..
Er, scratch that. Mars Phoenix flew with ATK UltraFlex array, with Boeing Spectrolab cells
http://www.pv-tech.org/chip_shots/_a/no_juice_no_glory_inside_the_solar_arrays_powering_the_phoenix_mars_lander/
105W/Kg
Similar array is scheduled to fly on ST8
http://nmp.nasa.gov/st8/
Shooting for 175W/Kg
"The mass of the panels themselves quickly start to become a major issue as you scale up the thrust to make them useful,"
Thin film cells. They havent been flown in space yet apart from FTSCE/MISSE-5 tests, but you can get pretty good power to weight ratios with them, IIRC around 2KW/kg has been achievable.
Just went to http://www.swtor.com/ with FF 2.0.0.16 from Ubuntu 7.04, which sent me to a nice "Welcome old browsers" page. What gives ?
I wouldnt have a comprehensive answer, but most end-user oriented stuff that i have tried recently ( random-buntus, Mandriva, suse ) supply a few different stock builds of "blinkin-lights" kernels.
Does a falling tree make a sound when nobody is listening ? Does a distro like Ubuntu remain Ubuntu when you swap out its kernel ?
Actually, just cant be arsed to recompile a kernel just to get one file off the damn card.
And btw, read-only support WAS in default Hardy but it just wouldnt work, it was easier to do it on a BSD machine.
>>mpd on Ubuntu ... I can read most formats!!
Try UFS-formatted compactflash ..
dude you are still on bash ? that is so unhip,
here is what dash has to say:
$ kill yourself
kill: 1: Illegal number: yourself
A small update of the nice financial situation : General Motors was trading below $5, with market cap of less than 3bn. Its balance sheet shows -55bn negative equity, meaning essentially it should be bankrupt already.
...
Back in 1998, this stock was above $90, they had a working EV and a series hybrid version of it.
Ford is trading below $2
Dude, in which world is COM deprecated ? Effectively most of Windows system programming ( plug-ins, filters, extensions yada yada, especially the parts that concern shell, explorer or IE extensions ) are all exposed through COM intefacts still. In some cases we still have simple C interfaces like for device drivers, and a lot of security or crypto related stuff. So WDYM deprecated ?