[sdiy] Old logic series?

[John L Marshall]

Could these be really old parts made in 1973 or 1974 followed by the week?

Take care,
John

Pacific Northwest Synth Meeting September 25, 2004
----- Original Message ----- 
From: "Karl Ekdahl" <_nial_ at yahoo.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, September 05, 2004 3:09 PM
Subject: [sdiy] Old logic series?


> Hi all, i've got a bunch of old chips that all have
> the prefix PC or PCF, half of them goes by 74xx -
> which i'm unsure if it's the usual 74 series or not -
> and the other half goes by 73xx which i don't have a
> clue what it is.
>
> Anyone?
>
> Karl
>
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