[geeks] Difference Engine at the Computer History Museum

Jonathan Katz jon at jonworld.com
Thu Apr 10 17:31:41 CDT 2008


On Thu, Apr 10, 2008 at 6:29 PM, Mark <md.benson at gmail.com> wrote:
>  Mice were in the version 2.0 design, which was powered by treadmills ;)

I don't think they were PS/2. Were they serial or parallel?



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