full subtractor
nounA full subtractor is a small machine in computers that takes away numbers and also handles a borrow from the next column.
The full subtractor computed the difference between the two binary numbers and passed the borrow to the next stage.
OTHER MEANINGS
2. A digital logic circuit with three inputs (minuend, subtrahend, and borrow-in) that produces a difference and a borrow-out.
A full subtractor can be built from two half subtractors and an OR gate.
3. A person or device that performs complete subtraction rather than partial subtraction.
The calculator acts as a full subtractor for multi-digit problems.
4. In educational contexts, a tool or method that teaches all steps of subtraction including borrowing.
The teacher used a full subtractor worksheet to show regrouping across zeros.