# binary number system

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Related to binary number system: decimal number system, octal number system, hexadecimal number system

## binary number system

A method of representing numbers that has 2 as its base and uses only the digits 0 and 1. Each successive digit represents a power of 2. For example, 10011 represents (1 × 2

^{4}) + (0 × 2^{3}) + (0 × 2^{2}) + (1 × 2^{1}) + (1 × 2^{0}), or 16 + 0 + 0 + 2 + 1, or 19.The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun | 1. | binary number system - a positional system of numeration that uses binary digits and a radix of twopositional notation, positional representation system - a numeration system in which a real number is represented by an ordered set of characters where the value of a character depends on its position |

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