"a black indicator lights up black to let you know you've done it". I thought it was my eyesight going but no, there are some chips that are almost impossible to read. I rather like EL switch illumination but they're hard to find and may have been custom when they were used. On 24 Jun 2017 9:40 am, "David C Brown" wrote: > Being a great fan of Douglas Adams I favour black warning lights. > Preferably on a black panel with the lettering in black. > Come to think of it most IC manufacturers must be fans as well since the > favoured way of marking their products is with very dark grey lettering o= n > a black background. :-) > > __________________________________________ > David C Brown > 43 Bings Road > Whaley Bridge > High Peak Phone: 01663 733236 > Derbyshire eMail: dcb.home@gmail.com > SK23 7ND web: www.bings-knowle.co.uk/dcb > > > > > *Sent from my etch-a-sketch* > > On 23 June 2017 at 23:58, Alan wrote: > > > In the US, some years ago, we had to remove red LED numerals and etc fr= om > > our ophthalmology equipment for FDA reasons. Being that the equipment > would > > find itself in a medical setting. It seems that red was reserved for > error > > or hazard indicators. But this is straying from the original post. > > > > > > Looking forward, > > Al Shinn (Tinker) > > > > > > > > > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .