2 Mar
2009
2 Mar
'09
11:41 a.m.
From: CSquared
Sent: Friday, February 27, 2009 2:53 PM
I also seem to recall that Univac or some other
computer manufacturer
actually used a 90 (?) column card for even better packing density.
I'll leave that improved calculation to someone who actually remembers
how many columns those cards were blessed with.
Univac 90-column cards are Hollerith cards just like the "IBM" cards.
They consist of upper and lower groups of 45 columns of 6 round punches
(instead of the rectangular punches favoured by IBM).
Rich Alderson
Vintage Computing Server Engineer
Vulcan, Inc.
505 5th Avenue S, Suite 900
Seattle, WA 98104
mailto:RichA at vulcan.com
(206) 342-2239
(206) 465-2916 cell