To make a $2-$bit adder:

a$.$ You should have created a half adder for part b and a full adder for part c$.$ Look these up on line to make sure that$$s what you$$ve done. Now put the two circuits together appropriately to create a circuit for that adds two $2$ digit binary values with inputs $1,0,1,$ & $0$ and outputs

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$2,1,$ & $0.$

b$.$ Draw the wiring diagram. Be careful choosing the order of your switches or you may find testing the circuit challenging.