"Keith Nuttle" wrote in message
...
On 3/30/2010 8:37 PM, Swingman wrote:
On 3/30/2010 6:53 PM, Keith Nuttle wrote:

My favorite slide rule was the circular slide rule. For some
spectra
conversion in IR or UV you could make the calculation on the
circular
slide rule faster that any calculator today.

Do you remember your first electronic calculator? I got a TI-30
(IIRC)
when I went back to school briefly after the service. We
weren't even
allowed to bring them to class, much less take a test with it.

TI-30? That is only about 20 years old. The electronic
calculator I am talking about was bought in 1970. It had a big
nixy(sp?) display and was the size of a typewriter. It was
significantly better that the old mechanical one. It did X /
+ - and had 12 rows of 10 keys in each row. Took several seconds
to do simply + and - calculations and longer to do X and /.

Monroe 990 with 16 digit display. The Frieden was better, with
its initial 3-level version of RPN, but who woulda' thunk it?

--
Nonny
Suppose you were an idiot.
And suppose you were a member
of Congress.... But then I repeat myself.'

-Mark Twain
..