email was Mac something something

From: Jules Richardson <>
Date: Thu Jan 13 18:19:17 2005

On Thu, 2005-01-13 at 22:54 +0000, Lawrence Wilkinson wrote:
> On Thu, 2005-01-13 at 14:25, Paul Koning wrote:
> > Paper tape readers can go much faster (I've seen 2000 cps) but those
> > are optical readers, so the job is far easier.
> At this stage I have to jump in with an impressive 5000cps example
> (albeit 5bit) from 1944; of course it is:
> (This is a nice page on the optical reader)

I believe they can get 8000cps out of the rebuild (made from original
components) running it flat-out, but heat becomes a problem and so it's
kept at 5000 normally. Not bad going at all.

(aside: the Colossus rebuild is technically off limits to the public at
present; I'm normally there on a Saturday at least though so yell if you
happen to be visiting the park)


Received on Thu Jan 13 2005 - 18:19:17 GMT

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