- Joined Dec 5, 2016
i 'm making a circuit of Adder/Substractor in 1's complement, the objective is put the answer in 7 segment displays. I have at least the 75% of the circuit made, how you can see in the attached image, the only problen that I have is that in the output (7 segments displays) doesn't show the negative numbers. For example, if i have 1-2=-1, that means that in binary will be S(1) M(0001) -> (10001). the circuit literally do the binary number, i mean, instead of show -1 (1 0001) it shows 17 (10001) what can i do if i want that the displays show -1?