1) Modify the circuit of Figure 1 to make this a subtractor that uses 2's complement....

   

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1) Modify the circuit of Figure 1 to make this a subtractor that uses 2's complement. 2) Make the truth table for the subtractor. 3) Modify the circuit of Figure 1 to use only NAND gates. Ao- Bo Co So : Cout 0 Figure 1. Full adder circuit. You must label with pin numbers before assembling. 1) Modify the circuit of Figure 1 to make this a subtractor that uses 2's complement. 2) Make the truth table for the subtractor. 3) Modify the circuit of Figure 1 to use only NAND gates. Ao- Bo Co So : Cout 0 Figure 1. Full adder circuit. You must label with pin numbers before assembling.