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Binary Number System

Binary Number System

Learn about the binary number system in this lesson.

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Overview

The decimal number system, which is used in daily life, consists of ten numerals: 0123456789. In contrast, the binary number system used by computer hardware consists of two numerals: 0 and 1. This is a direct consequence of a bit consisting of two values. If bits had three values, then the computers would use a number system based on three numerals.

The digits of the decimal system are named incrementally as ones, tens, hundreds, thousands, etc. For example, the number 1023 ...