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Righto, we have an absolute ball doing the 'Eurovision' theme party. A house full of people of all ages, with host country themed food, house decoration themed similarly and the all important 'voting'. It is no surprise that our votes never even get close to the official 'winner' but we just...

Hi all, just got my latest dose of 'Silicon Chip' magazine. In the August edition there's 'The history of Op Amps'; "Harold S. Black's discovery of negative feedback paved the way for the development of operational amplifiers, which are widely used in all sorts of electronic devices, especially...