1969 Monroe/Compucorp Nixie Calculator Teardown
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Jon D.
Jan 23, 2015, 12:31:32 PM1/23/15
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I stumbled onto this link for a teardown of a 1969 Monroe/Compucorp Nixie Calculator in my email from EDN. Apparently, Monroe predates Compucorp; one of the boards in this Monroe-labeled calculator has a Compucorp label.
Cheers,
Jon
David Forbes
Jan 23, 2015, 12:37:52 PM1/23/15
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Jon,
That's nice to see. I always wondered what was in that thing.
Our high school had one of these in the seventies, and the poor computer
students had to use it, pretending it was a computer. It had an optical
card reader that would read hand-punched cards for programming
rudimentary things.
Later we got a PDP-11. I blame that for my fall from grace. (OK, it was
really the university's decSystem10 that caused my downfall.)
On 1/23/15 10:31 AM, Jon D. wrote:
> I stumbled onto this link for a teardown of a 1969 Monroe/Compucorp
> Nixie Calculator in my email from EDN. Apparently, Monroe
> predates Compucorp; one of the boards in this Monroe-labeled calculator
> has a Compucorp label.
>
> http://www.edn.com/design/integrated-circuit-design/4438124/1969-Compucorp-calculator-teardown
--
David Forbes, Tucson AZ
That's nice to see. I always wondered what was in that thing.
Our high school had one of these in the seventies, and the poor computer
students had to use it, pretending it was a computer. It had an optical
card reader that would read hand-punched cards for programming
rudimentary things.
Later we got a PDP-11. I blame that for my fall from grace. (OK, it was
really the university's decSystem10 that caused my downfall.)
On 1/23/15 10:31 AM, Jon D. wrote:
> I stumbled onto this link for a teardown of a 1969 Monroe/Compucorp
> Nixie Calculator in my email from EDN. Apparently, Monroe
> predates Compucorp; one of the boards in this Monroe-labeled calculator
> has a Compucorp label.
>
> http://www.edn.com/design/integrated-circuit-design/4438124/1969-Compucorp-calculator-teardown
David Forbes, Tucson AZ
John Rehwinkel
Jan 23, 2015, 12:53:00 PM1/23/15
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> I stumbled onto this link for a teardown of a 1969 Monroe/Compucorp Nixie Calculator in my email from EDN. Apparently, Monroe predates Compucorp; one of the boards in this Monroe-labeled calculator has a Compucorp label.
Speaking of which, does anyone have a few of those old style white and gold ICs they don't need? I'm making a "belt gadget" for a Ghostbusters costume, and I'm having trouble finding any (the gold recyclers seem to have gobbled them all up).
- John
Jon D.
Jan 23, 2015, 1:00:37 PM1/23/15
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Dave,
I remember in my high school in Springfield, VA that there was a Nixie machine similar to this one that also had a card reader but it factored quadratic polynomials as I recall which I thought was really cool at the time and still is. 8o>
Jon
David Forbes
Jan 24, 2015, 2:17:48 AM1/24/15
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Writing a program to solve quadratic equations was one of the
assignments for the students at our school, as I recall.
assignments for the students at our school, as I recall.
Ron Schuster
Jan 26, 2015, 9:42:15 AM1/26/15
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I probably have a few. How many were you looking for?
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