HDL / text-based description requirement: Evaluate the statement: “In a text-based hardware description (e.g., HDL), the circuit or module being described must be given a name.”

Difficulty: Easy

Correct Answer: Correct

Explanation:


Introduction / Context:
Text-based hardware description languages (HDLs) such as Verilog and VHDL describe hardware modules/entities using structured syntax. Naming these design units is essential for instantiation, hierarchy building, and tool processing (elaboration, synthesis, simulation).



Given Data / Assumptions:

  • Language is text-based (e.g., Verilog module, VHDL entity/architecture).
  • Designs are organized hierarchically with named units.
  • Tools require identifiers for references and instantiation.


Concept / Approach:
In Verilog, a module declaration begins with “module <name> (…) ;” and ends with “endmodule.” In VHDL, an entity and its architecture both require identifiers. Names allow other modules to instantiate them and allow tools to track connectivity and scope.



Step-by-Step Solution:

Identify the requirement: a named unit is the anchor for ports and internal logic.Map to HDL syntax: Verilog module name, VHDL entity/architecture names.Conclude that naming is mandatory for valid compilation and hierarchy.


Verification / Alternative check:
Try to compile an HDL file without a module/entity name; parsers will reject it because the grammar mandates an identifier to define the design unit.



Why Other Options Are Wrong:

Incorrect: Contradicts HDL grammar.Only required in schematics: Schematic blocks also have names, but the statement is about text-based HDLs where naming is essential.Not enough information: The requirement is inherent in the language definitions.


Common Pitfalls:
Confusing instance labels with module/entity names; omitting or duplicating names leading to namespace collisions.


Final Answer:
Correct

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