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Old 3rd May 2020, 1:20 pm   #5
dave_n_t
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Join Date: Sep 2003
Location: Cheltenham, Gloucestershire, UK.
Posts: 261
Default Re: Wireless World calculator project

Practical Electronics did a 'Digi-Cal' series, which I'm pretty sure was TTL based. And the author may have been a R. Coles (less sure about this). I'm also fairly certain that there was a letter to the mag complaining that the TTL calculator was superceded by the single-chip versions now available, but the editor responded that the educational value of the Digical series was worth it, even if you didn't make the thing.


hth


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