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To: tcmay who wrote (135182)5/15/2001 10:44:11 PM
From: Dave Budde  Respond to of 186894
 
Speaking of the 4004...one of my memorable assignments at Intel in the mid 70's was...

I worked on the 4201 which was a clock chip for the 4040 family (the follow-on to the 4004). This was implemented in a 15V 9-micron gate CMOS process. Anyway, I once had to evaluate a returned unit to see why it would not oscillate when connected to a crystal. The reason was that after popping the top of the chip which was clearly marked 4201 and in the correct 16-pin ceramic package, what I found inside was not a 4201, but instead a 2104 4Kb memory chip. Certainly explained the problem though. A rather embarrassing letter explaining this problem was sent to the customer that returned the unit.