On 18.07.11 11:17, Jon Elson wrote:
> andy pugh wrote:
> > http://www.emi-mec.eu/autosprinte/progcontrol/index.php5
> >
> > (prompted by
> > http://cgi.ebay.co.uk/Emi-Mec-Auto-Sprint-Series-E-Emi-mec-lathe-/180693575715
> > )
> >
> Oh MY! It looks like a move back to the 1950's! GROAN!
Even in 1972, at the tertiary institute I attended, the electronic card
punches had similar (but hard-wired) technology. The character generator
ROMs which drove the matrix printer head, to print our lines of fortran
code across the top of the Hollerith cards (at the same time as the
holes were punched), were approximately 2 ft x 2ft x 1" aluminium
frames, with horizontal tinned wires stretched across one face, and
vertical on the other. Diodes were hand-soldered wherever a '1' was
needed. Two frames were needed for the full character set.
I have a fast paper tape punch in my small collection, and a Pertec tape
drive, but a card punch much like an upright piano would be hard to find
room for.
Erik
--
In a tunnel 86m long, they unearthed what is believed to be the largest
deposit of human excrement ever found in the Roman world. Seven hundred
and fifty sacks of it to be exact, containing a wealth of information.
- http://www.bbc.co.uk/news/world-europe-13781202
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