The 555 was designed back in the early 1970s by Hans Camenzind at the semiconductor company Signetics. It quickly became one of the most popular and used ICs of all time. Data from 2004 shows that it was selling about a billion chips per year and has been used in products ranging from toys to spacecraft.

My new buddy, Hans, supervising my 555 circuit building.

This guide was first published on Mar 13, 2018. It was last updated on Mar 08, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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