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I ordered quite a bit of stuff for my school through www.techsupplies at the start of December. they are unavailable by phone and not replying to emails. Does anyone know if they have ceased trading or is it just there contact details need updating?

I am trying to design circuits for picaxe chips in Yenka. There are some serious problems that I don't understand. 1] why do the 18m chips in Yenka not have the correct number of legs? Is there anyway they can appear with the correct number of legs, otherwise they cannot be tied to the voltage...

I am teaching an engineering diploma course and there is an electronics module. The standard electronics I am comfortable with but I have never used pics before. i have downloaded lots of software. The advice I need is: 1. What type of chip should I start with? 2. What basic hardware pack for...