Cracking Open the IBM PC Jr.

Mystery chip

The chip marked in yellow may be important, but I found it curious. I also found that I could not find information explaining what its function was. I would guess it has something to do with either the RAM expansion or the Internal modem.

Perhaps someone out there can share some insight concerning the chip in question?

About Mark Kaelin

Mark W. Kaelin has been writing and editing stories about the IT industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to BreakingModern.com, aNewDomain.net, and TechRepublic.

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