noun
alphanumeric coded set
A computing term for a character set that includes both letters and digits, encoded for data processing.
このシステムでは、英数字コード化集合を用いてデータを表現する。
This system represents data using an alphanumeric coded set.
Compound of 英数字 (alphanumeric), コード化 (encoding), and 集合 (set). A technical term likely coined in computing contexts.