‘字符’ (zì fú) literally means ‘character symbol’ — ‘字’ (zì) refers to a written character or glyph, and ‘符’ (fú) means ‘symbol’ or ‘sign’. Together, they form a technical term used primarily in computing and digital contexts to denote any individual unit of text that can be represented, stored, or processed — including letters, digits, punctuation marks, and even whitespace or control characters. Unlike the broader term ‘汉字’ (hàn zì), which specifically means Chinese characters, ‘字符’ is language-neutral and applies equally to English letters, Arabic numerals, emojis, or Unicode symbols.

This word appears frequently in programming, data processing, and software interfaces — for example, when specifying password length limits, validating input fields, or describing encoding standards like UTF-8. It emphasizes the discrete, machine-readable nature of textual units rather than their linguistic meaning or cultural origin. Learners should note that while ‘字符’ can technically include Chinese characters, it is rarely used in everyday speech about writing or calligraphy — there, ‘字’ alone suffices.