Odd punched cards

Fred Cisin cisin at xenosoft.com
Thu Apr 23 14:19:34 CDT 2020

Aperture cards (piece of 35mm micro-film mounted in card)
(As opposed to Emmanuel Goldberg's "Rapid Selector", or Vannevar Bush's 

Round hole Univac/Remington-Rand 90 column
There was folklore that IBM had PATENTED their rectangular hole shape, and 
the use of a wire brush and brass roller reader

Optical mark cards

IBM System/3 96 columns undersized cards

"Marginal" knitting needle cards(Royal McBee, EZ sort, Zato-code, 
keysort,...); some even used two depths of notch

It was right about the time of LBJ's re-election that IBM started to round 
the corners on cards

On Thu, 23 Apr 2020, Mike Stein via cctech wrote:

> How about 96 column and EPC (Edge Punched) Cards?

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