File:Signetics NE555N.JPG

Summary
https://commons.wikimedia.org/wiki/File:Signetics_NE555N.JPG Description English: Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28) Date	2 October 2005 Source	Own work Author	de:User:Stefan506