The operation of a direct entry system in which a central processor (or a self contained microprocessor) provides prompts and performs validation checks and formatting functions to assist a keyboard operator.; 一種直接數(shù)據(jù)鍵入系統(tǒng)的操作,其中中央處理機(jī)(或輸入系統(tǒng)自含的微處理器) 給出提示、完成合理性檢查和格式化功能,以幫助鍵盤操作人員。