It is a form of data entry that helps computers read credit CARDS.

它也是另一种形式的数据录入，可以帮助计算机读取信用卡。

youdao

It is a form of data entry that helps computers read credit CARDS.

它也是另一种形式的数据录入，可以帮助计算机读取信用卡。

youdao