alphanumeric

adj

1. (not-comparable)Consisting of, or limited to, letters and/or numbers, especially the characters A to Z (lowercase and uppercase) and 0 to 9.
2. (nonstandard, not-comparable, rare)Consisting of these characters plus punctuation and other special characters.

   “Therefore, we need a special code to represent all alphanumeric data (letters, symbols, and numbers).”

noun

1. An alphanumeric character.

   “Finally, alphanumerics are digits, uppercase letters, lowercase letters, or accented letters […]”