Full Subtractor Circuit. So in the case of full subtractor circuit we have three inputs a which is minuend b which is subtrahend and borrow in. On the other side we get two final output diff difference and borrow out.
This circuit has three inputs and two outputs. In the earlier article already we have given the basic theory of half adder a full adder which uses the binary digits for the computation. Earlier the same operation can be performed by using the half subtractors.
The actual logic circuit of the full subtractor is shown in the above diagram.
This circuit has three inputs and two outputs. The three inputs are a b and c denote the minuend subtrahend and the previous borrow respectively. A full subtractor fs is a combinational circuit that performs a subtraction between two bits taking into account borrow of the lower significant stage. We ll build the full subtractor circuit by using the half subtractor circuit and the or gate as components or blocks.
