No, I am not the Selective Service System. If you are old enough... you understand the reference. My name is John and I am an electrical engineer with a background in radiotelephones, when they were installed in the trunk of your car, and medical electronics for nearly 40 years. I am returning to circuit design and purchased a Picoscope for the value, ease of use, and rational software policy. I am sure that everyone here would agree with this assessment. I Hope I can contribute more than I am helped.