On 12/16/2011 4:17 PM, Tony Duell wrote:
I had
previously met Sir Denys Wilkinson and he had mentioned something t=
o me about his pioneering days in nuclear instrumentation (including pinb=
all machine multichannel analyzers). When he had told me that he had inve=
nted the D/A converter I didn't really believe him but kinda nodded along=
Depends on what you mean by D-A i guess...
In one of my old books on electric lighting they suggest lighting a large
room by 15 light bulbs in a 3*5 array o nthe ceiling and controllign them
by 4 switches, thus giving 15 levels of illumination (I guess 'all off'
is not illumination :-)). THye even give the best way to arrange the
light bubls controleld by each switch, so as to get fairly evnn
illumination in all cases. I consdier that ot be a D-A.
-tony
That's very cool! I can't help imagining the switches sitting side by
side on the wall with 8, 4, 2, and 1 labels above them. (Set the
lighting to level 11, please. That's rather bright, could we try level
9? Thanks very much... that's perfect.) Of course 2^3, 2^2, 2^1, and
2^0 labeling would be more devious and a lot more fun. ;-)
--
Later,
Charlie C.
In God We Trust!!!
Freedom is in dire danger any time the US congress is in session...
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