VHDL Identifiers Quiz
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Questions and Answers

Which characters are identifiers composed of in Verilog?

  • Alphanumeric characters and underscore (correct)
  • Special characters and numbers
  • Only numbers
  • Alphabetic characters only
  • In Verilog, what must identifiers start with?

  • Any character
  • A number
  • Special character
  • An alphabetic character or an underscore (correct)
  • What is the purpose of the port list in a Verilog module?

  • Define the interface between the module and its environment (correct)
  • List all the gates used in the module
  • Specify the internal connections within the module
  • End the module description
  • How are internal connections declared in Verilog?

    <p>As wires</p> Signup and view all the answers

    What represents the structure of a circuit in Verilog?

    <p>(Predefined) primitive gates</p> Signup and view all the answers

    How do gate instantiations look in Verilog?

    <p>(Optional name), gate output, inputs separated by commas in parentheses</p> Signup and view all the answers

    Which keyword in Verilog is used to declare the end of a module?

    <p>endmodule</p> Signup and view all the answers

    What happens if blank spaces appear within the text of a keyword in Verilog?

    <p>The code will generate an error</p> Signup and view all the answers

    What is a module in Verilog?

    <p>The text enclosed by the keyword pair module...endmodule</p> Signup and view all the answers

    Which of the following is not a primitive gate in Verilog?

    <p>xor</p> Signup and view all the answers

    What are identifiers in Verilog?

    <p>Names given to modules, variables, and other elements in the language</p> Signup and view all the answers

    In Verilog, what does the keyword 'wire' typically refer to?

    <p>A signal that can be driven or read by other modules</p> Signup and view all the answers

    What is the purpose of the timescale compiler directive in Verilog?

    <p>It specifies the time unit and precision for propagation delays.</p> Signup and view all the answers

    In the given Verilog module, which of the following is an input port?

    <p>C</p> Signup and view all the answers

    Which of the following is a valid gate instantiation in Verilog?

    <p>and #(30) G1 (w1, A, B);</p> Signup and view all the answers

    What is the purpose of the wire keyword in Verilog?

    <p>It specifies an internal connection between gates.</p> Signup and view all the answers

    Which of the following is a valid identifier in Verilog?

    <p>gate_instance</p> Signup and view all the answers

    What is the purpose of a test bench in Verilog?

    <p>It provides stimulus to the design and checks the outputs.</p> Signup and view all the answers

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