AHDL basics — In Altera/Intel AHDL, the SUBDESIGN header defines a block’s interface (its inputs and outputs). Decide whether this description of the SUBDESIGN section's role is accurate.

Introduction / Context:
Various HDL dialects introduce different keywords for defining a module's interface. In AHDL (a vendor-specific language historically used with Altera tools), the SUBDESIGN construct defines a design block and declares its ports (inputs/outputs) at the header level.

Given Data / Assumptions:

• Language context: AHDL, not VHDL or Verilog.
• SUBDESIGN header includes port lists (I/O).
• Functional details follow in the body after the interface declaration.

Concept / Approach:
In AHDL syntax, the top line begins with SUBDESIGN name (port declarations); this is conceptually similar to a module header in Verilog or an entity in VHDL. Therefore, stating that the SUBDESIGN section defines inputs/outputs of the logic circuit block is correct.

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer: