Re: Oscilloscope
A 12 bit 40MHZ scope would require a 4 layer board and someone who is an expert at board layout and a somewhat experienced designer. You will also need an FPGA chip to handle the data coming out of that ADC, because no microcontroller can handle that kind of a raw data stream, plus format it and send it up to a PC or out onto an LCD screen, plus handle the user interface. Do you have the test equpment to handle an 80 MHZ project, because it gets expensive, real expensive. Do a proof of concept with a PIC and it's built in ADC, and see what kind of results you get at 15KHz. I think you need a reality check on what you are asking. Build a go-kart before talking about building an F1.