Growing up, I raided old radios and televisions for parts. Unfortunately that was an age when electrical shocks awaited the unwary and I received my share. I've approached computers from the same direction, how they work and what makes them work. Now, the only shocks are when they don't work as expected. I'm hoping to help users avoid those shocks. Dan Gathright, aka Dangerous Dan, has an Associates Degree in Instrumentation. Six years with the US Navy as a Data Systems Technician (Repair of computers and all of the peripherals). Followed by a 41 year career as a Laboratory Instrument Technician.