22 Apr
2005
22 Apr
'05
8:35 a.m.
On Thu, 21 Apr 2005, Scott Stevens wrote:
As an aside, another microfilm technolgy that is
interesting is
'aperture cards.' Those are 'conventional' IBM Punched Cards, with a
slotted window in them that you slide a piece of microfilm into.
Generally used for archival document retrieval systems. The film would
contain an engineering drawing, and part of the card has a field
containing punched index information. Yet another technology that's
mostly gone.
I've got a deck of these :)
--
Sellam Ismail Vintage Computer Festival
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