dasatcopthorne Posted November 12, 2019 Share Posted November 12, 2019 Hi Guys. Is there any chance someone has kept a series of articles on Colour light signal operations using ICs containings NAND & AND Gates etc., and showing Truth Tables It was probably in the 70s and appeared in The Modeller or The Constructor. Thanks Dave Link to post Share on other sites More sharing options...
Nigelcliffe Posted November 12, 2019 Share Posted November 12, 2019 I think it might have been Model Railway News, I think somewhere between 1978 and 1981. I'll see if I can spot the issues; I remember the articles; they taught me quite a bit about basic digital electronics when I was at school. I did keep the articles, but where they might be several house moves later isn't certain. - Nigel Link to post Share on other sites More sharing options...
jpendle Posted November 12, 2019 Share Posted November 12, 2019 I remember doing traffic lights as a science project at school in the late 80's. It involved a 555 timer and a bunch of NAND gates. I know it's not the same but the principles would be. Regards, John P Link to post Share on other sites More sharing options...
RMweb Premium kevinlms Posted November 13, 2019 RMweb Premium Share Posted November 13, 2019 7 hours ago, dasatcopthorne said: Hi Guys. Is there any chance someone has kept a series of articles on Colour light signal operations using ICs containings NAND & AND Gates etc., and showing Truth Tables It was probably in the 70s and appeared in The Modeller or The Constructor. Thanks Dave I certainly remember such an article. In fact I made a test board which seemed to work, until I reversed the power supply or something and a chip blew up! Trouble is where? Link to post Share on other sites More sharing options...
CKPR Posted March 29, 2020 Share Posted March 29, 2020 The articles were in Model Railways in 1979-80 - I've got the 1980 articles ('4- Signals', '5- Conclusions', '6- Clocks and flashing lights', '7- Multiplexing' and '8- Decoding'). The 1979 articles were in the August, November and December editions. Link to post Share on other sites More sharing options...
dasatcopthorne Posted March 29, 2020 Author Share Posted March 29, 2020 Haha. Thanks for that. I have managed to get them all. Cheers Dave 1 Link to post Share on other sites More sharing options...
sharris Posted March 31, 2020 Share Posted March 31, 2020 On 12/11/2019 at 23:08, jpendle said: I remember doing traffic lights as a science project at school in the late 80's. It involved a 555 timer and a bunch of NAND gates. I know it's not the same but the principles would be. Regards, John P I remember having to design a pedestrian operated traffic light controller (can't remember now if it was a simple crossing or a road junction) using discrete logic as a question in one of my Electronic Engineering BSc exams in the mid 1980s. Sounds like traffic lights were the in-thing in 1980s education! Link to post Share on other sites More sharing options...
Nigelcliffe Posted April 3, 2020 Share Posted April 3, 2020 Yep, I had the same in the introduction to electronics part of my IT master's degree, around 1985. Lots of traffic light sequencing examples. - Nigel Link to post Share on other sites More sharing options...
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