digit check

If you're expecting a number, make sure your data is in number format& typically, that means only digits, and at least one digit ( you can check this using the regular expression^ [ 0-9]+$).

如果您期望输入的是一个数字，就确认数据是数字格式――比如，只是针对阿拉伯数字，并且是至少一位阿拉伯数字（您可以使用与正则表达式^[0-9]+$检查它）。

International Telex Directory Information check digit [ International Standard Book Number]

国际电传号码簿信息稽核数码〔国际标准书号〕

A binary check digit; for example, a parity bit.

一个二进制校验位, 例如奇偶位.

Attached is the sales contract with the UPC numbers. Please be sure and add the check digit for 4404.

附件为带UPC条形码的合同，请确定为4404（款）加上校验码。

This check digit calculation works similar to bar coding.

这些校验数位计算工作与条形码相似.

A garment of unusual size. check digit [ International Standard Book Number]

号码超过标准的服装稽核数码〔国际标准书号〕

Check digit: An extra digit calculated automatically from other digits in a data item and used to check its accuracy.

校验数位：在一数据项目中的额外数位，它自动加上于其他数位中运算，以核对该数据的准确性。