I've managed to push back the age of
the oldest computer user manual in my
collection by another 42 years.
SCREW PROPELLER COMPUTER
Geo. McDermott
52 pages, hardbound, first edition
Taylor and Carpenter, 1902
This book describes a mechanical computer
with two separate rotating discs to enter
variables and used to calculate the dimensions
and proportions of screw propellers
The last chapter is entitled "Directions
for operating the computer" with 7 example
problems.
Unfortunately there are no pictures of the
computer in the book so I'll have to wait
until the book attracts the computer. :)
--Doug
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Doug Coward
_at_ home in Poulsbo, WA
Analog Computer Online Museum and History Center
http://www.best.com/~dcoward/analog
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Received on Sat Sep 08 2001 - 02:07:34 BST