Microsoft Windows vs. IBM 701

From: Michael Holley <>
Date: Thu Oct 28 20:34:23 2004

> From: David Forbes
> I was reading that 1961 BRL survey, and found the user reports
> of the IBM 701 fascinating. They apparently had an average
> uptime of about 2-4 hours.

In 1976 I worked with a guy who maintained a tube computer when he was going
to Cal Poly San Luis Obispo. He said that everyday the ran a diagnostic at
low voltage then at high voltage. This would point out weak tubes. They
would replace the tubes and the machine was good for another day.

Michael Holley
Received on Thu Oct 28 2004 - 20:34:23 BST

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