--- title: Binary & Hexadecimal: Intro to Non-Decimal Systems description: A beginner-friendly introduction to non-decimal number systems used in computing. Covers how the decimal (base 10) system works, then explains binary (base 2)... canonical: https://daily.dev/posts/binary-hexadecimal-intro-to-non-decimal-systems-tch100yjl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Binary & Hexadecimal: Intro to Non-Decimal Systems | daily.dev og:description: A beginner-friendly introduction to non-decimal number systems used in computing. Covers how the decimal (base 10) system works, then explains binary (base 2)... og:url: https://daily.dev/posts/binary-hexadecimal-intro-to-non-decimal-systems-tch100yjl og:image: https://api.daily.dev/og/posts/tCh100yJl.png og:image:alt: Binary & Hexadecimal: Intro to Non-Decimal Systems og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Binary & Hexadecimal: Intro to Non-Decimal Systems **[Playful Programming](https://daily.dev/sources/playfulprogramming)** · [@crutchcorn](https://daily.dev/crutchcorn) · 13 min read · 0 upvotes · 0 comments ## Summary A beginner-friendly introduction to non-decimal number systems used in computing. Covers how the decimal (base 10) system works, then explains binary (base 2) with step-by-step conversion examples including how to represent 50 in binary. Introduces hexadecimal (base 16) and its 0-9/A-F symbol set, with practical applications including how CSS hex color codes like #F33BC6 map to RGB values (0-255), and how ASCII encodes text characters as binary numbers internally. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#css](https://daily.dev/tags/css), [#computer-science](https://daily.dev/tags/computer-science) [View this post on daily.dev](https://daily.dev/posts/binary-hexadecimal-intro-to-non-decimal-systems-tch100yjl) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Binary & Hexadecimal: Intro to Non-Decimal Systems","url":"https://daily.dev/posts/binary-hexadecimal-intro-to-non-decimal-systems-tch100yjl","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/binary-hexadecimal-intro-to-non-decimal-systems-tch100yjl"},"datePublished":"2026-03-16T21:47:17.310Z","dateModified":"2026-03-17T18:01:22.632Z","description":"A beginner-friendly introduction to non-decimal number systems used in computing. 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