Re: Yellow and grey dots

In our local computer garage they used to make a white dot on the chips
that were tested and found good.

Probably these are the results of some similar factory tests.
2011.12.03. 12:58, "Gerrit Heitsch" <gerrit@laosinh.s.bawue.de> ezt írta:

> Hello,
>
> when looking through my collection, I notice that there are yellow or grey
> dots on some of the older MOS-chips (up to 1985 or so). They are usually
> (not always) on the side where pin 1 can be found.
>
> Anyone here know what theses markings indicate?
>
>  Gerrit
>
>
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>


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