On Wed, 28 Jul 2004, Marvin Johnston wrote:
> Assuming that you are not talking about S-100 clock/calendar cards, the
> Lobo Drives Max-80 had a built in clock.
I'm thinking farther back. Was there any mini or mainframe that had a
real-time clock built in or as an add-on option?
It's come up in some litigation. The actual issue at hand is that someone
was able to overturn a patent by claiming the IBM 650 had a real-time
clock built in. They "proved" this by submitting as evidence a printout
that had the date printed on it(!) I've checked the IBM 650 Manual of
Operation and it makes no mention whatsoever of a real-time clock. I
pretty much figured it wouldn't but I of course had to do due diligence.
But it made me wonder: what was the first computer to have a built-in
real-time clock?
--
Sellam Ismail Vintage Computer Festival
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Received on Thu Jul 29 2004 - 06:49:59 BST