Bear in mind that Microsoft was the largest commercial UNIX vendor in licensing XENIX for the TRS-80 Model 2 alone. From this experience, they had significant knowledge of 32-bit preemptive multitasking.
That exposure allowed them to see how valuable Dave Cutler's PRISM team would be in a total redesign in melding VMS and (whatever tolerable) UNIX features into a new kernel, but focusing it upon Win32.
There were OS/2 and POSIX emulation layers also, but these were obviously second class.
The self-teaching guide is impressive. The programmed instruction format is a great way to learn, and it works both in print and online. I wish there were entire curricula available this way.
Edit: It seems that Wiley has published a number of books in the self-teaching guide series:
A type-1a supernova peer would produce this effect, leaving only the black hole (or the oversize star that would become it). I don't know any other types where the star is completely destroyed.
diferent sources put humans as second only to cattle, for a single animal species, so I was wrong, but I did mean single species of animal.
As to getting down/up voted, I am useing it as an anylitical tool to understand what facets of what I write are offensive, at least to some, and a fine line seems to exist where some of what I say, gets positive comments, or engagement, while bieng down voted at the same time, which is puzzling but interesting.If I go through what I write a few times, sometimes I can see the possibly ambiguous bits, and make them clearer, which seems to lessen
the down voteing.
Kind of like a tough love writing school around here that way.
How difficult is the purification process? Is it as difficult as uranium hexafloride gas?
Yes, gas centrifuge appears to be a leading method.
'The purification starts with “simple” isotopic purification of silicon. The major breakthrough was converting this Si to silane (SiH4), which is then further refined to remove other impurities. The ultra-pure silane can then be fed into a standard epitaxy machine for deposition onto a 300-mm wafer.'
Doesn’t silane like catching fire when it sees an oxygen molecule? The other day I heard about it being used as rocket fuel for lunar ISRU applications.
This is no worse than before. All electronic grade silicon is already produced starting from silane or trichlorosilane, and both are about equally hazardous to handle. See this overview of producing purified silicon:
"Chemistry of the Main Group Elements - 7.10: Semiconductor Grade Silicon"
I would be shocked if I am incorrect.
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