John Larkin said:
Right. The guy who created the kernal of NT was one of the authors of
VMS. Nobody at Microsoft knew how to program, so they had to bring in
an expert.
Well, you _could_ say that they knew how to program the 8080, or would
even that be an overstatement?
I sure wish iNtel had come up with something other than the 8086/8088
for 16 bits, though. Didn't Zilog have a 16-bit version of the Z80?
I suppose it makes sense that IBM went with iNtel - the upside down
bytes in Motorola probably frightened the IBM guys. ;-)
Yeah, I heard that that 8-bit data bus let them use existing
peripherals and memory and stuff, so there's an excuse for the 8088,
but why such an incredibly stupid segmentation scheme?
Nowadays, of course, it's moot, I guess.
Does a 64-bit processor have a 2^64 address space?
Is that a comprehensible number?
18,446,744,073,709,551,616 decimal.
lessee: 1 KByte = 1,024
MByte = 1,048,576
GByte = 1,073,741,824
The first hit on "unit scale prefixes" WOQ
http://www.google.com/search?hl=en&lr=&ie=UTF-8&q=unit+scale+prefixes
was
http://www.ex.ac.uk/cimt/dictunit/dictunit.htm#prefixes
where I found this:
-
yotta [Y] 1 000 000 000 000 000 000 000 000 = 10^24
# 18,446,744,073,709,551,616 ... nope
zetta [Z] 1 000 000 000 000 000 000 000 = 10^21
# 18,446,744,073,709,551,616 That's the one!
exa [E] 1 000 000 000 000 000 000 = 10^18
peta [P] 1 000 000 000 000 000 = 10^15
tera [T] 1 000 000 000 000 = 10^12
giga [G] 1 000 000 000 (a thousand millions = a billion)
mega [M] 1 000 000 (a million)
kilo [k] 1 000 (a thousand)
hecto [h] 100 (a hundred)
deca [da]10 (ten)
1
deci [d] 0.1 (a tenth)
centi [c] 0.01 (a hundredth)
milli [m] 0.001 (a thousandth)
micro [µ] 0.000 001 (a millionth)
nano [n] 0.000 000 001 (a thousand millionth)
pico [p] 0.000 000 000 001 = 10^-12
femto [f] 0.000 000 000 000 001 = 10^-15
atto [a] 0.000 000 000 000 000 001 = 10^-18
zepto [z] 0.000 000 000 000 000 000 001 = 10^-21
yocto [y] 0.000 000 000 000 000 000 000 001 = 10^-24
#
18 ExaBytes. One Billion Gigabytes. How many times over could
that hold all of Human Knowledge?
Google is your friend.
BTW, if there were a big enough RAM to actually hold and address
all currently recorded human knowledge, how big would the index
be?
Daffynitions:
femtosecond: The time it takes to realize you just wandered into
the "wrong kind" of bar in West Hollywood. ;-)
Cheers!
Rich