Difficulty: Easy
Correct Answer: Truth table
Explanation:
Introduction / Context:
Every combinational logic function can be fully specified by enumerating all possible input combinations and their corresponding outputs. The tabular artifact that performs this enumeration is central to design, verification, and simplification (e.g., Karnaugh maps). Knowing its name and role is essential in digital systems education and practice.
Given Data / Assumptions:
Concept / Approach:
A truth table enumerates outputs for every input vector. For n binary inputs, there are 2^n rows. The table can represent single-output or multi-output functions and is often the starting point for algebraic minimization. “Function table” is sometimes used informally, but “truth table” is the standard term in digital design curricula and datasheets.
Step-by-Step Solution:
Identify the artifact: a table listing all input combinations.Associate it with digital logic function specification.Recall the widely accepted term: truth table.Select “Truth table.”
Verification / Alternative check:
Data sheets for logic ICs (e.g., 74xx series) include “Truth Table” sections that list inputs and resultant outputs. This confirms the conventional terminology.
Why Other Options Are Wrong:
Routing table relates to networks; ASCII table maps codes to characters; “Function table” is ambiguous and less canonical; “None” is wrong because the correct term exists.
Common Pitfalls:
Assuming a partial table suffices; omitting don’t-care conditions; confusing truth tables with state transition tables (which include present/next states for sequential machines).
Final Answer:
Truth table
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