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To: Dan3 who wrote (73604)	3/5/2002 11:00:19 PM
From: maui_dude	Read Replies (1) \| Respond to of 275872

Dan, Re : "Today, mainstream CPUs are 6 layer devices. A couple of layers for power and ground, a couple of layers for semiconductors like transistors, resistors, and capacitors, and 2 or 3 layers to route all the interconnections." FYI, the 6 layers does not include the couple of layers of transistor (polysilicon, P and N diffusion) you counted. The mainstream processor have Poly, P and N-diffusions and layer 1 through 6. With regard to Jerry mentioning 9 layers, he probably counted either Poly or diffusion (or both) as routing layer. Maui.