Electronics > Beginners

ic config

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Hornnumb2:
How do I know where pin one is on this, so I can replace. Thanks Michael

Hornnumb2:
Thanks I really could tell if that was a dot or not, yeah the chip I bought is already programmed. Michael

james_s:
It's also marked on the PCB silkscreen, the notch indicates the end with pin 1. With the chip right side up, pin 1 is always the bottom-left corner, most of the time the text is printed right side up on the IC however I have seen pictures of a few examples where this wasn't the case. Never personally encountered one though.

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