I think my first programable device was a Tandy (Radio Shack) programable calculator that had a one by two inch display and used a Basic programing language. My first official computer was a Timex-Sinclair (Z80), the first computer for less then $100.00. Then one day I was at that great ham radio show in Dayton Ohio (is that still going on?) and bought a Tandy computer that used a Tandy OS that was DOS compatible. Been messing around with these things ever since.