Basic terminology check: In number systems and logic, what does the term “binary” literally mean?

Introduction / Context:
Computers operate on binary representations at every level—logic gates, machine instructions, memory bits. Knowing the literal meaning of “binary” reinforces why only two symbols are needed to encode any information in digital systems.

Given Data / Assumptions:

• “Binary” refers to base-2 representation and two logical states.
• Common mappings: 0/1, low/high, false/true.
• Question asks for the literal count implied by the term.

Concept / Approach:
“Binary” stems from the Latin “bi–” meaning two. The binary number system uses digits 0 and 1, and binary logic uses two stable states. All larger constructs (bytes, words) are compositions of these two states.

Step-by-Step Solution:
Interpret the word root: “bi” → two.Relate to practice: two symbols in base-2, two logical levels.Select “Two.”

Verification / Alternative check:
Cross-check with other bases: decimal (“deci” ten) uses ten digits; quaternary uses four; ternary uses three.

Why Other Options Are Wrong:
Three/Four/Ten: correspond to ternary, quaternary, and decimal respectively.None: incorrect because “Two” is the literal meaning.

Common Pitfalls:
Confusing the number of symbols with voltage levels; different technologies may invert active-high/active-low but still represent two states.

Final Answer:
Two