Strong typing in VHDL: VHDL is very strict about how we assign to and compare various program elements. Which term correctly describes these elements (signals, variables, constants, and literals)?

Introduction / Context:
VHDL is a strongly typed hardware description language. Correct terminology matters when reasoning about assignment, comparison, and type compatibility. The language groups assignable and comparable entities under a general term used throughout the standard and documentation.

Given Data / Assumptions:

• We refer to signals, variables, constants, and literals in VHDL.
• We are focusing on the generic umbrella term used by the language.
• Type checking and object classes (signal/variable/constant) are enforced.

Concept / Approach:
In VHDL, the word “object” is the standard term for entities that hold values and participate in assignments and comparisons: signals, variables, constants, and files are all objects. This is separate from specific types such as std_logic_vector, integer, or user-defined enumerations.

Step-by-Step Solution:

Verification / Alternative check:
Review any VHDL reference: syntax rules refer to “object_kind,” and declarations specify object class (signal, variable, constant), confirming the usage.

Why Other Options Are Wrong:

Common Pitfalls:
Mixing object classes with types; assuming all signals are vectors; forgetting literals are also objects for comparison and expression evaluation.

Final Answer:
objects