Check Digit

简明释义

集装箱核对数字

英英释义

例句

1.When entering your credit card information, the last digit is often a Check Digit.

输入信用卡信息时，最后一位通常是校验位。

2.In ISBN numbers, the Check Digit can determine if the number is correctly formatted.

在ISBN号码中，校验位可以确定号码是否格式正确。

3.The system automatically calculates the Check Digit for each new product added.

系统会自动计算每个新添加产品的校验位。

4.A Check Digit helps to prevent errors in data entry by validating the input.

通过验证输入，校验位有助于防止数据输入错误。

5.The barcode scanner uses a Check Digit to ensure the scanned number is valid.

条形码扫描器使用校验位来确保扫描的号码有效。

作文

In the world of data processing and information technology, accuracy is paramount. One of the essential tools used to ensure the integrity of data is the Check Digit. A Check Digit is a form of redundancy check used for error detection on identification numbers. It is an additional digit added to a sequence of digits that allows the verification of the original number's accuracy. This concept is widely applied in various fields, including banking, telecommunications, and inventory management.The primary purpose of a Check Digit is to detect errors that may occur during data entry or transmission. For instance, when a person inputs a long string of numbers, it is easy to make mistakes, such as transposing digits or entering the wrong number entirely. By using a Check Digit, systems can automatically verify whether the inputted number is likely to be correct. If the Check Digit does not match the expected value calculated from the other digits, the system can flag this as an error.One of the most common examples of a Check Digit is found in International Standard Book Numbers (ISBNs). An ISBN is a unique identifier for books, and the last digit is a Check Digit. The calculation for the Check Digit involves a specific formula that takes into account the other digits in the ISBN. If someone tries to enter an incorrect ISBN, the system will calculate the Check Digit based on the first nine digits and compare it to the one provided. If they do not match, the system will reject the entry, helping to prevent errors in book cataloging and sales.Another area where Check Digits are crucial is in credit card numbers. Each credit card number contains a Check Digit at the end, which is calculated using the Luhn algorithm. This algorithm helps to validate the credit card number before processing transactions. When a cardholder enters their credit card information online, the system uses the Check Digit to confirm that the number is valid. If the Check Digit does not align with the rest of the digits, the transaction will not go through, which protects both the merchant and the consumer from potential fraud.Moreover, Check Digits also play a vital role in logistics and inventory management. Companies often use barcodes to track products, and these barcodes contain a Check Digit to ensure that the scanned data is accurate. When a product is scanned at checkout, the system checks the Check Digit to confirm that the barcode was read correctly. This reduces the chances of inventory discrepancies, ensuring that businesses can maintain accurate stock levels and avoid financial losses.In conclusion, the Check Digit is a simple yet powerful tool that enhances the reliability of data across various sectors. By incorporating a Check Digit into numerical sequences, organizations can significantly reduce the risk of errors, thereby improving overall efficiency and accuracy. As technology continues to evolve, the importance of Check Digits will remain crucial in safeguarding data integrity and maintaining trust in automated systems.

在数据处理和信息技术的世界中，准确性至关重要。确保数据完整性的基本工具之一是校验位。校验位是一种用于识别号码的错误检测冗余检查形式。它是附加在数字序列末尾的一个额外数字，用于验证原始数字的准确性。这个概念被广泛应用于银行、通信和库存管理等多个领域。校验位的主要目的是检测在数据输入或传输过程中可能发生的错误。例如，当一个人输入一串长数字时，很容易出错，例如调换数字或完全输入错误的数字。通过使用校验位，系统可以自动验证输入的数字是否可能是正确的。如果校验位与从其他数字计算出的预期值不匹配，系统可以将其标记为错误。一个常见的校验位例子是在国际标准书号（ISBN）中。ISBN是书籍的唯一标识符，最后一位是校验位。校验位的计算涉及一个特定的公式，该公式考虑到ISBN中的其他数字。如果有人尝试输入一个不正确的ISBN，系统将根据前九位数字计算校验位并与提供的进行比较。如果它们不匹配，系统将拒绝该条目，从而帮助防止书籍编目和销售中的错误。另一个校验位至关重要的领域是信用卡号码。每个信用卡号码的末尾都有一个校验位，该位是使用Luhn算法计算得出的。此算法有助于在处理交易之前验证信用卡号码。当持卡人在网上输入信用卡信息时，系统会使用校验位确认号码是否有效。如果校验位与其余数字不一致，则交易将无法完成，这保护了商家和消费者免受潜在欺诈。此外，校验位在物流和库存管理中也发挥着重要作用。公司通常使用条形码跟踪产品，而这些条形码包含校验位以确保扫描的数据是准确的。当产品在结账时被扫描时，系统会检查校验位以确认条形码是否被正确读取。这减少了库存差异的可能性，确保企业能够保持准确的库存水平，避免财务损失。总之，校验位是一个简单但强大的工具，可以提高各个领域数据的可靠性。通过在数字序列中加入校验位，组织可以显著降低错误的风险，从而提高整体效率和准确性。随着技术的不断发展，校验位的重要性在保护数据完整性和维护对自动化系统的信任方面将继续至关重要。