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To: Zeev Hed who wrote (11091)	12/6/1997 4:59:00 PM
From: Tulvio Durand	Read Replies (1) \| Respond to of 25960

1200 world wide foundries translates into how many steppers? 12000? Tulvio

To: Zeev Hed who wrote (11091)	12/6/1997 6:31:00 PM
From: ForYourEyesOnly	Read Replies (2) \| Respond to of 25960

Zeev, thanks for the response. 1. I don't have detailed data about litho system usage, so I would like to defer to the Specialist, Maxwell, and the others. I do think that 5 usages per wafer is a very low number of steps that require lithography. 2. This figure is for "300mm production of SYSTEM LSI", which will combine memory with logic in a single chip. Using 2 different device types in a single chip would probably increase the amount of lithography required. 3. The report was done by Japan's Electronic Data Corp., and should be reasonably reliable. Good luck... THC