Binary basics: The two symbols (digits) used in the binary number system are which pair?

Introduction / Context:
Binary is the foundation of digital electronics and computing. All logic states, data values, and instructions are ultimately encoded using only two symbols. This question checks your recall of those symbols and dispels common misconceptions arising from related labels like “high/low” or “true/false.”

Given Data / Assumptions:

• Binary is a base-2 numeral system.
• Many physical encodings (voltage levels, light on/off) map to two abstract symbols.
• Human-readable labels (H/L, T/F) are convenient but not the digits themselves.

Concept / Approach:
In a positional numeral system, the set of digits must equal the base. For base-2, there must be two digits. The canonical binary digits are 0 and 1. Other labels simply describe states that are mapped onto these digits in a particular technology or logic convention.

Step-by-Step Solution:

Verification / Alternative check:
Check any binary representation: counting from zero goes 0, 1, 10, 11, 100, …, demonstrating that only 0 and 1 are used as digits; additional characters do not appear.

Why Other Options Are Wrong:

Common Pitfalls:
Confusing logic-level labels with numeral digits; assuming “true/false” are numeric digits; misapplying decimal intuition to binary.

Final Answer:
0, 1