Full Subtractor Using Half Subtractor. The difference output of first half subtractor is ex or of a and b. Full subtractor logical diagram.
The entire subtractor circuit can get by making use of 2 half subtractors through an extra or gate. The half subtractors designed can be used in the construction of full subtractors. It is implemented by using two half subtractor circuits along with or gate.
Full subtractor logic circuit performs subtraction on three bit binary numbers.
Q can be get the full subtractor from 2 half subtractor. And the borrow output just needs two additional inputs da and db. It is implemented by using two half subtractor circuits along with or gate. We ll build the full subtractor circuit by using the half subtractor circuit and the or gate as components or blocks.
