I got a 20mhz 1 now the only scope I have used is a winscope that use's the sound card of my pc it is slow but you could tell if a pin was going low to high thanks for all the input. I read the book with this scope and it said you could sample faster if you use ONE CHANNEL that the rating is for TWO CHANNEL can that be so?? Well any way I now get to use my probes I made for when I got me a real scope. Nigel all of us American's have attitude's now that we are broke.