Egad!
I certainly hope that was developed for alphanumeric output; if it was purely for numeric, it would've been a hell of a lot easier to simply have ten pre-formed digits (as did the "Nixie Tube").
It's amazing looking back at the ingeniousness of earlier generations of engineers, having to straddle both electronics and mechanics in order to get something done - something which seems so trivial these days.
-- Bob Milutinovic Cognicom
Corse it was.
It was never purely numeric.
Yeah, the ASR33 teletype was a mechanical monstrosity compared with the printing terminals that replaced it like the LA36.
chips like to day.
the memory... Try explaining that to the kids
time. Also featured a 250 baud cassette interface for
so wobbly that you'd get motion sickness if you tried
I built my first computer myself from an article in Electronics Australia. My first 'computer' was the EA 'Baby' 2650, with a whopping 256 bytes of RAM and a 110 baud TTY interface - so I also had to build the Applied Technology/ETI dumb terminal (VDU) to use it! (The latter was far more complicated than the former.)
The 32/33 was quite a neat and simple machine. Or are you thinking of the 28/35 machines - they were much more complicated!
-- Sell your surplus electronic components at http://ozcomponents.com Search or browse for that IC, capacitor, crystal or other component you need. Or find new components at http://auscomponents.com
Ah yes, punched cards.
How I hated them!
Sylvia.
Sylvia Else wrote
Some loved them. I had to physically remove the 029 and card reader so the dinosaurs couldn't keep using them.
I still use them for writing on.
At least you always had something to write on.
Try mark sense cards.
They do eventually run out, unfortunately.
It sure could print alpha characters (but upper case only), as well as some special characters like ( ) / * . , etc. There would have been no pressing need for a "numeric only" printer on those keypunch machines
- to see why go to the search link given by Don at the start of this thread, and observe what gets punched if you type 0123456789.
Yep. Any fool can come up with something like:
if Temp < Min then Min=Temp
But it took a really clever bloke to come up with the idea for the old-style minimum and maximum thermometer. Andy Wood snipped-for-privacy@trap.ozemail.com.au
As an old BOM dude, we used a minimum thermometer and a maximum thermomter as in 2. The minimum used a barbell that was dragged down with surface tension of the alcohol and the maximum used mercury and a thinner "neck" that caused the column to break and leave a part of the column above it to show max temp. The min was reset with a magnet and the max by shaking/swinging to rejoin the mercury.
Still took a clever bloke to come up with those.
cool!
-- rgds, Pete ------- ?If Julia is the answer, then what was the stupid question?!? "If the WORLD as a whole cut ALL emissions tomorrow, the average temperature of the planet's not going to drop for several hundred years, perhaps over on thousand years" - Tim Flannery, Climate Commissioner
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