Which number system uses only two symbols: 0 and 1?

Study for the United Airlines Flight Simulator Technician Trade Test. Prepare with flashcards and multiple-choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Which number system uses only two symbols: 0 and 1?

Explanation:
Two-symbol numeral systems are base-2, meaning each position represents a power of two and only two digits are used. The system that uses only two symbols—0 and 1—is the binary system, the foundation of how computers encode information because each bit can be off (0) or on (1). Other common bases use more symbols: decimal uses ten digits (0–9), hexadecimal uses sixteen digits (0–9 and A–F), and octal uses eight digits (0–7).

Two-symbol numeral systems are base-2, meaning each position represents a power of two and only two digits are used. The system that uses only two symbols—0 and 1—is the binary system, the foundation of how computers encode information because each bit can be off (0) or on (1). Other common bases use more symbols: decimal uses ten digits (0–9), hexadecimal uses sixteen digits (0–9 and A–F), and octal uses eight digits (0–7).

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