RE: 7712 info

From: Baltissen, GJPAA (Ruud) <"Baltissen,>
Date: Fri, 19 Jun 2020 10:39:50 +0000
Message-ID: <AM6PR10MB23609DABBAE5A6DBFFA5A402E1980_at_AM6PR10MB2360.EURPRD10.PROD.OUTLOOK.COM>
> C64 DRAM has a high failure rate but...

I repaired a lot of boards but I myself never encountered a broken DRAM.


> I had a lot more dead 7708 (74LS257), 7709 (74LS258) and 7707 (7406) than their 74xx equivalent.

I have seen a lot of boards but I was a bit surprised by the number of 77xx ICs. I know about the 7711 but I never saw a 7707 for example. So I wonder, how rare are these? Or were they mainly used in the USA and not Europe? 


With kind regards / met vriendelijke groet, Ruud Baltissen

http://www.baltissen.org




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Received on 2020-06-19 13:00:30

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