- 1
Something alphanumeric uses letters and numbers together — A to Z and 0 to 9. Password boxes, serial codes, and some licence plates are alphanumeric: a form may ask for at least eight alphanumeric characters. In careful use it does not include or symbols such as @, #, or a space, though people stretch it. You meet it mainly on computers, forms, and in offices, not at the dinner table. It is usually an adjective (an alphanumeric code). People also use it as a noun for one of those characters, a letter or a digit.
英數字的（臺灣資訊用語；也說文數字。中國大陸較常說字母數字）
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
alphanumericadj/ˌæl.fə.n(j)uːˈmɛ.ɹɪk/
- 1
Consisting of, or limited to, letters and/or numbers, especially the characters A to Z (lowercase and uppercase) and 0 to 9.
- 2
rareConsisting of these characters plus punctuation and other special characters.
- Therefore, we need a special code to represent all alphanumeric data (letters, symbols, and numbers).
alphanumericnoun/ˌæl.fə.n(j)uːˈmɛ.ɹɪk/
- 1
An alphanumeric character.
- Finally, alphanumerics are digits, uppercase letters, lowercase letters, or accented letters […]
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。