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[OM] Re: Delayed Digital Capture - DDC

Subject: [OM] Re: Delayed Digital Capture - DDC
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Thu, 08 Feb 2007 07:36:00 -0500
I never had hands on with a Data Cell but I've seen them operate.  I 
think the strips are sucked back into the columns with vacuum.  IBM has 
used vacuum to control tape in various ways going back to the early 50's.

Chuck Norcutt

Jay Drew wrote:
> As we are now touting old weird storage methods may I present:
> 
> http://www.computer-history.info/Page4.dir/pages/Storage.dir/index.html
> 
> The data cell wrote data on what looked like oversized bookmarks.  These thick
> mylar strips were stored in cells and were pulled out and wrapped around a
> spindle for spinning, where the read/write function was performed.  What I 
> never
> could figure out was how they were able to put the strips back in their slots 
> so
> reliably without crunching them.

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