Henrik first of all a big thank you for giving your time to help me along (and everyone else too of course).
If there's still "basic" stuff that you don't understand then you need to back up and get that sorted first or you will just be creating more problems for yourself. Perhaps we jumped to the LOOKUP and COUNT commands etc a little too soon(?).
I agree, I do need to back up and go over some of the basics we've covered, like you say running before you can walk with programming will only compound problems later on.

I think I need to write lots of short programs using the basics and do enough of them to really drive it home.

That said, I do understand the basic principle of the COUNT command and it's timing component also with the LOOKUP command.

When you think that trying to use C and assembler I hadn't even managed to switch an LED on! I've come a long since joining this forum and using PB in the last few weeks thanks to you all, there's absolutely no doubt that this in the language to use!

So no, time to build this circuit (I need to make something work) and I'm sure I'll still have plenty of questions for you about the basics still, so you're not of the hook quite yet....;-)

David