• An interview with Hans Camenzind (the designer of the 555 timer IC) http://www.semiconductormuseum.com/Transistors/LectureHall/Camenzind/Camenzind_Index.htm 2 comments 7/8/2010

• Interesting read on the development of the NE555 chip. http://www.semiconductormuseum.com/Transistors/LectureHall/Camenzind/Camenzind_Page2.htm 10 comments 30/7/2010 electronics
• History of the 555 http://semiconductormuseum.com/Transistors/LectureHall/Camenzind/Camenzind_Index.htm 3 comments 31/3/2009 electronics