Electronic Magic

I remember how my fascination with electronics began. When our family left the mission, we travelled first to Fiji. There my father and I approached a door, which opened by itself as we drew near. I said: "How did it do that, Daddy?" My father showed me a low wall. He said: "There's an eye in the wall." It was a glass lens -- the simple broken beam principle -- but it seemed to me like magic: an eye which saw us and opened the door. Today, electronics still seems like magic to me. I have written about it, too, as if it were magic. OBSERVATION: One of the most magical moments was when someone blew a trumpet in a stadium in the Caribbean, and it triggered a switch on my table in Africa.