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Old 4th May 2020, 8:44 am   #9
Join Date: Dec 2005
Location: Denton, Manchester, UK.
Posts: 137
Default Re: Wireless World calculator project

Just to throw a spanner in the works:
An apprentice friend at work built a calculator, no later than 1970. It was in a die cast box, thumbwheel switches to set the figures, Nixie tube display and definitely used TTL.
The devices used , eg 7441 Nixie driver , were all obtained from our production lines in the factory. There was tacit approval from management for him to build it to demonstrate the technology. It certainly worked though was a bit cumbersome to set each calculation. I am also fairly sure it was based on a WW design.
I am clear about the year because I hadn't been there long, spending a few weeks in each department, both he and I were at the time in the "Evaluation" section.
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