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8bit adder

White blocks are imput. (2 buttons 2
bock's, its simple)
Blue blocks are output
Red blocks are the carry the topmost red block is the also an output (its the 9th diget)
the yellow blocks are the imput for the carry
black blocks are not to be conected

If you want to calulate 16 bits simply build another one and conect the topmost red block of the first module to the bottommostyellow block


Created by BitZero