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From: rbowman <bowman@montana.com>
Newsgroups: comp.os.linux.advocacy
Subject: Re: The enduring appeal of Microsoft Excel
Date: 29 Oct 2024 19:18:38 GMT
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On Tue, 29 Oct 2024 14:31:13 -0400, Chris Ahlstrom wrote:

> Check out ControlCalc. Our company hired a guy to build an air-traffic
> lighting system. He build the control hardware himself, and he used
> ControlCalc to drive it (and show graphics of various airfields).

Newfangled ideas. In the '70s the company I worked for had a contract to 
build the controllers for airport approach lighting systems (rabbit)

https://www.trafficsignalmuseum.com/pages/ef15.html

What he refers to as the cam shaft is actually an Eagle Signal stepper. 
The 'motor' is a solenoid that sucks up a ratchet. The silver thing he's 
holding up in the last photo is a massive lead weight. Let's just say the 
thing doesn't operate silently.

Nylon cable ties weren't acceptable to the FAA so the wiring harness had 
to be laced.

https://www.dairiki.org/hammond/cable-lacing-howto/

Finest state of the art. I'm hoping the modern systems are a little more 
advanced but with government agencies you never can tell.