[HN Gopher] A one-bit processor explained: reverse-engineering t...
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       A one-bit processor explained: reverse-engineering the vintage
       MC14500B
        
       Author : Claude_Shannon
       Score  : 13 points
       Date   : 2022-08-16 20:45 UTC (2 hours ago)
        
 (HTM) web link (www.righto.com)
 (TXT) w3m dump (www.righto.com)
        
       | kens wrote:
       | I'm not sure why this appeared on HN, but author here if anyone
       | has questions...
        
         | elpocko wrote:
         | It's really hard to tell when it was originally posted. Can you
         | please add a date to your posts?
        
         | bogomipz wrote:
         | Hi. What a wonderful post.
         | 
         | I have a question about the 7th image on the page, here:
         | 
         | https://static.righto.com/images/mc14500b/inverter-magnified...
         | 
         | Can you help me understand the relationship between the metal
         | layer, the vias, the gate, in and out? The middle image in the
         | above link makes them seem like they are all connected. Does
         | "in" provide the voltage the that pulls a gate high and turns
         | it on or off? Are the vias and contacts just used to provide
         | connection to a power rail?
         | 
         | Also what governs the fascinating shapes that we find in the
         | two gate outlines such as in the image link above? They looks
         | like and L or P outline. How do they arrive at these? Is it a
         | just a function of floor plan routing and satisfying some
         | minimal surface area needed?
        
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       (page generated 2022-08-16 23:01 UTC)