>Mine only has to work once, but there are some extreme >conditions involved. Sitting in a bath of liquid Nitrogen >& subjected to a pulsed magnetic field of 25 tesla. I'm >not convinced they will work for me, but thought I'd cool >one down & see how it behaved. So do tell - how ARE you going to read a display immersed in liquid nitrogen ... -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist