3.5.1 - Writing a Testbench for the 4-Bit Adder
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Practice Questions
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What is a testbench used for?
💡 Hint: Think about how we check whether a circuit works.
Identify one language used to write testbenches.
💡 Hint: Consider the two common languages in digital circuit design.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of a testbench?
💡 Hint: Recall what it means to test a circuit.
True or False: A Verilog testbench must include an initial block for specifying inputs.
💡 Hint: What role does the initial block play in the testing process?
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Challenge Problems
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Write a complete Verilog testbench for a 4-bit binary adder that includes at least five test cases with expected output for each case.
💡 Hint: Don’t forget to include appropriate delays between test cases for timing.
Identify and describe two common errors found when running a testbench simulation and suggest how to fix them.
💡 Hint: What steps can you take to troubleshoot your testbench?
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