1" paper tape buy ?

Rich Alderson RichA at vulcan.com
Mon Mar 2 13:41:14 CST 2009

> 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

More information about the cctech mailing list