DLD

Half Subtractor and Full Subtractor

Medium
EST. TIME: 45 min

Half Subtractor and Full Subtractor

Design and Implementation of Half Subtractor and Full Subtractor.

Theory & Concepts

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1. Half Subtractor

Performs subtraction of two bits (A - B). Higher bit is Minuend, second is Subtrahend.

Difference = A ⊕ B
Borrow = A' · B

2. Full Subtractor

Subtracts B from A considering a borrow (Bin) from the previous stage.

Difference = A ⊕ B ⊕ Bin
Borrow-out = (A' · B) + (Bin · (A ⊕ B)')

Procedure

1. Setup inputs A, B, and Bin.

2. Observe Difference and Borrow outputs.

3. Verify with the standard truth table.

Learning Resources

Animated Lecture

Subtractors Explained

Ready to Start?

Launch the virtual simulator to build this circuit and verify the outputs in real-time.

Lab Status

Active Simulation

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