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SHENZHEN I/O >  Workshop > KeyKon's Workshop > 3-BIT ADDER
3-BIT ADDER
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3 Comments
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Cocoa 26 Oct, 2022 @ 7:40pm 
I did it, solved in 23/1290/0, PGA * 4 and NOT * 3

I used a PGA to rotate the inputs of A2, B0 and B1 to solve the wiring problem.

https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2880414670
KeyKon  [author] 10 Aug, 2022 @ 12:56pm 
Nice, my best is 13/1277/24 with 2 MC6000 and 3 DX300.

Yea you are right, the lack of space is a pain in the ass and prevents experimenting, no idea why I did this :D

PGA is possible but expensive (I needed 4 + one negate gate):

Image [imgur.com]
Cocoa 18 Jul, 2022 @ 9:40pm 
Solved in 14/1420/28. Using 3 MCs and 3 expanders.

Tried to use PGA to solve this puzzle but failed. Maybe putting (a0, b0), (a1, b1) and (a2, b2) together will make this puzzle easier...