V2EX lsb

LSB

释义 Definition

LSB 是计算机与数字电路中的缩写,最常见指 least significant bit,即“最低有效位”:在一个二进制数中权值最小、最右边的那一位。它常用于位运算、数值精度、以及某些信息隐藏(如 LSB 隐写)等场景。
(另有较常见含义:Linux Standard Base,Linux 标准基础;具体需看上下文。)

发音 Pronunciation (IPA)

/l s bi/

例句 Examples

The LSB of 13 in binary is 1.
13 的二进制表示中,最低有效位(LSB)是 1。

In LSB steganography, tiny changes to the least significant bits can hide a message without noticeably altering the image.
在 LSB 隐写中,对最低有效位做微小改动就能隐藏信息,同时几乎不会明显改变图像。

词源 Etymology

LSB 来自英语短语 least significant bit 的首字母缩写:least(最小的)+ significant(有效的、重要的)+ bit(比特/二进制位)。在二进制位权系统中,最右侧那一位的权值最低,因此称为“最低有效位”。

相关词 Related Words

文学与著作举例 Literary Works

  • The Art of Computer Programming(Donald E. Knuth):在位运算与二进制表示相关讨论中常涉及最低位/最低有效位概念(以文字描述或等价术语出现)。
  • Hacker’s Delight(Henry S. Warren, Jr.):大量位技巧(bit hacks)会直接使用或讨论 LSB(最低有效位)的性质与提取方法。
  • Computer Organization and Design(David A. Patterson & John L. Hennessy):讲解二进制数据表示、位运算与数字电路时会涉及最低有效位的概念。
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