V2EX base-16

Base-16

Definition / 定义

base-16十六进制(hexadecimal)计数系统,以 16 为基数,使用 09AF(或 af)表示数值。常用于计算机领域表示内存地址、颜色值、机器码、哈希值等。(也常写作 base 16 或直接称 hex。)

Pronunciation / 发音

/bes skstin/

Examples / 例句

I wrote the color in base-16 as FF00FF.
我用十六进制把这个颜色写成 FF00FF。

In debugging, the program prints memory addresses in base-16, which makes patterns easier to spot than in decimal.
在调试时,程序用十六进制输出内存地址,比十进制更容易看出规律。

Etymology / 词源

base 源自拉丁语 basis(“基础、底座”),在数学里引申为“基数”;16 表示以 16 为基数的计数系统。计算机发展中为了更紧凑地表示二进制(因为 1 个十六进制位 = 4 个二进制位),十六进制成为常用表示法,因此 base-16 也常与 hexadecimal 互换使用。

Related Words / 相关词

Literary Works / 文学与著作例证

  • RFC 4648: The Base16, Base32, and Base64 Data Encodings(明确讨论 Base16/Base-16 编码)
  • Charles Petzold, Code: The Hidden Language of Computer Hardware and Software(介绍二进制与十六进制等表示法)
  • Brian W. Kernighan & Dennis M. Ritchie, The C Programming Language(涉及以十六进制表示常量与内存相关概念)
  • Andrew S. Tanenbaum, Structured Computer Organization(讲解计算机体系结构中常见的十六进制表示)
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