ALU adder section

most recent versions of all logics so far are at https://www.thingiverse.com/thing:2829196
I recommend downloading from there.

ALU adder section. still needs the connections to A and B register, and the inversion output.


http://nextbigfuture.com/2016/04/molecular-mechanical-computer-design.html

http://www.imm.org/Reports/rep046.pdf

the scad file also contains the other components that have been uploaded previously.
t.
Eventually i intend to parameterize the file and make it ani