simple adder
it is a very simple adder which adds 2 2-bit numbers to an other 2-bit number

i only used
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i only used
- mesecons conductors (mesecon wire, insulated mesecon wire, vertical mesecon),
- stone and obsidian glass (for style),
- and and xor gate (for working),
- not gate, switch, signs and lights (for looking)
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more screenshots
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