Morning Guys and Gals. I had a great day out yesterday at a pals open day, meet a few old friends i haven't meet for ages, it was great. Talking with one mate brought back to mind my inadequacy at understanding CV'c when programming decoders. Our conversation also cover other items of interest which we had in common and followed on this Forum. This prompted me to ask the question. Is there an Idiots guild to programming available to down load to help understand how to calculate CV's etc. Thought I was intelligent, but this gets me all stressed out, its seems like rocket science to me yet others just talk about it as if it like buttering bread.