The first teletext decoder I designed and built circa. 1976. Clock recovery was a ringing choke at 6.9375 MHz. Over a hundred TTL chips and several boards full of stuff!! Took a long time to wire up all that Veroboard....pic.twitter.com/mGDRnWbcpp
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My prototype stuff (when I was an R&D engineer) in the early 90s was still wired with wire-wrap, by a very skilled bloke who didn't make mistakes.
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