check digit

基本解釋

A binary check digit; for example , a parity bit.
一個(gè)二進(jìn)位校驗(yàn)位元，例如奇偶位。
The card number, a thirteen- or sixteen-digit string with a check digit
信用卡號(hào)，13 或 16 位數(shù)字組成的字符串，包括一個(gè)校驗(yàn)位
I'm trying to make a program that check the ISBN number and sees if it has the correct check digit, if it doesn't have the check digit it will add one.
我試圖制作一個(gè)程序，檢查ISBN號(hào)碼，看看它是否有正確的校驗(yàn)位，如果沒有校驗(yàn)位，它將添加一個(gè)。

Glancing at the bottom, this is pretty arbitrary, but I chose to format my string as follows: % 1f so at the bottom here I'm printing out %.1f, which quick sanity check means print just one digit after the decimal place.
看下這個(gè)底部，這個(gè)是相當(dāng)隨意的，但我選擇把我的字符串格式化成這樣：,所以在這個(gè)底部我打印輸出，提醒一下，這是一個(gè)只打印出,小數(shù)點(diǎn)后一位的方法。
哈佛公開課 - 計(jì)算機(jī)科學(xué)課程節(jié)選

The random 18-digit code plus two check digits will have a four-digit prefix added and it will have intelligence in it.
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All that the user needs to do is swipe the card at the existing check-out machine and enter a four digit PIN.
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The lower that two digit number is - like say 05 - the sooner your check gets cut.
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a digit derived from and appended to a string of data digits, used to detect corruption of the data string during transmission or transcription