On 17/04/2018 16:00, Martin Gregorie wrote:
>
> Everything else I've programmed has, like the ICL 1900s, also showed a
> total lack of blinkenlights.

As was said, 1900 was when the hardware was designed, and 2900 will
be when the software is read

2nd year electronics at Essex had the 1900 as the study, supported
by Prof Heath's book on Digital Computer Design.

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