The many methods or recording information in coded forms, on paper, tapes,punched cards, or tags that can be used over and over again to produce many other records without rewriting, usually refers to a process rendering the data machine readable or actually entering data into a system (via communication lines) at the site where the data is originally collected or generated.; 以代码形式在纸带、穿孔卡或可以多次用以产生其它记录而不需要重新编写的卡片上记录信息的 方法,通常是指在数据收集或产生的现场,使数据变成机器可读的或可将数据直接输入某系统(通过通信线路)的过程。