4 Jan
2005
4 Jan
'05
1:13 p.m.
Al, are you indicating that a) your copy of the book
has been scanned
correct. I'm not sure I'm comfortable with putting it on line, however.
also, it is a VERY strange book. I pulled it out again just to refresh
my memory about just exactly what they were trying to do with this project
while you could consider it a 'computer', it is not an 'automatic
computer'
every switch (all those little things made from paper clips) are operated
manually.
4 Jan
4 Jan
1:27 p.m.
On Tue, 4 Jan 2005 16:13:08 -0800 (PST)
aek(a)spies.com (Al Kossow) wrote:
My Digi-Comp was all operated manually, back in aprox. 1970 when I had one.
The first _electornic_ computer I ever wanted to build was one that was basically a
cascade of flip-flops made into an up counter. The input device was a telephone dial.
For some reason, the author of the book designed it to use multiple big TO-3 package
2N3055 transistors per flip-flop stage, which priced it WAY out of my school-kid budget at
the time. Looking back, it's pretty ridiculous that it wasn't designed around
little cheap transistors, i.e. 2N2222 parts.
Yikes. Serious topic drift. Sorry.
-Scott
Al, are you indicating that a) your copy of the
book has been scanned
correct. I'm not sure I'm comfortable with putting it on line, however.
also, it is a VERY strange book. I pulled it out again just to refresh
my memory about just exactly what they were trying to do with this project
while you could consider it a 'computer', it is not an 'automatic
computer'
every switch (all those little things made from paper clips) are operated
manually.
5 Jan
5 Jan
1:55 a.m.
At 06:27 PM 1/4/2005, Scott Stevens wrote:
The first _electornic_ computer I ever wanted to build
was one that was basically a cascade of flip-flops made into an up counter. The input
device was a telephone dial.
Hah! As a tike, I remember wiring an old dial as a switch with
a battery and a lamp, and thinking it was an adding computer because
if I dialed one number, held the dial in place, then dialed
the second number, then released the dial, the lamp would
blink the answer. :-)
- John
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