Skip to content
All Verilog HDL labs
  1. Logic Foundations8

  2. Combinational Design14

  3. Sequential Design14

  4. Counters & Timing10

  5. Finite State Machines8

  6. Memory & Reusable Blocks4

  7. Portfolio Projects2

Logic FoundationsPublished

Full Subtractor

Three-input subtraction with borrow-in, built from half subtractors and ready to cascade.

Beginner~30 minSelf-checking testbench2 challenges
Concepts covered
  • Borrow-in
  • Cascading
  • Structural reuse
This lab is part of Verilog HDL Labs

Unlock the complete lab — detailed explanation, functional spec, starter and full DUT code, a commented self-checking testbench, expected outputs, waveform walkthrough, solutions and challenges — with the Verilog HDL Labs package. Use the card to get access.

  • Detailed explanation & spec
  • Complete Verilog DUT code
  • Self-checking testbench
  • Expected outputs & waveforms
  • Solutions & debugging help
  • 2 progressive challenges
Back to all labs