Het Brenda,about two something years ago,I read an article at
www.gizmodo.com or maybe it was at www.boingboing.com about a
whole Radar system/thingy that has been down sized) etched on to a
silicon wafer chip about the size of a U.S.quarter coin.I reckon some
farads nowdays,you would need a microscope to even find them.

Just like me,especially in cold weather,,, sometimes I need a
''microscope''.
cuhulin