Grid parity is understood as that line, that threshold, below which renewable electricity is cheaper than electricity from burning fossil fuels.

网格奇偶校验被理解一条条线，一个阈值，低于这个标准，可再生能源发电比化石燃料发电便宜。

In our example, this adds up to a checksum of 364.

在的示例中，这加起来得到一个校验364。

In this case, the values whose parity we're considering are the number of 1s in each digit place of our binary sums. And that's why we can say that 2 and 0, both even numbers, can be treated as equivalents.

在这种情况下，正在考虑其奇偶校验的值是二进制的每个数位中 1 的数量。这就是什么可以说 2 0 都是偶数，可以被等价物。

As a verb, for example, " to proof" means to look at a piece of writing to make sure there are no mistakes;this is called " proofreading" or simply " proofing (something)" .

作动词，例如，“to proof”意味着审阅一段文以确保没有错误； 这被称“校对” 或简称“校验（某物）” 。

So you'll get a sector that has a valid checksum for the database, but it's the wrong, now you need to daisy chain your checksums.

所以你会得到一个对数据库具有有效校验的扇区，但它是错误的， 现在你需要串联你的校验。

Just as the first two checks let us pin down the column, these next two let you pin down the row.

就像前两个校验确定了列，接下来的这两个则你确定了行。

Other people say that, well, the fact that other people change the wrong information is a good check against error.

其他人则认， 好吧，其他人纠正错误信息这一事实本身就是一个很好的校验机制。

The reason this works is related to a concept called parity.

这样做的原因与称奇偶校验的概念有关。

Before the packet is sent, the transmitting computer calculates the checksum by adding all the data together: 89 plus 111 plus 33 and so on.

在数据包发送之前，发送计算机通过将所有数据相加来计算校验：89加上111再加上33等等。

Within this system, we handle business checks, limit control, fee calculation, state machine control, and event messaging logic.

该系统内，处理业务校验、限额控制、费用计算、状态机控制及事件消息逻辑。

And this special bit that the sender uses to control the parity is called a " parity bit" .

发送方用来控制奇偶校验的这个特殊位称“奇偶校验位”。

If we use it as a parity bit across the whole block, it lets us actually detect, even though we can't correct, 2-bit errors.

如果将其作整个块的奇偶校验位，它实际上可以检测到双比特错误，尽管无法纠正它。

If that sum is the same as the checksum sent in the header, all is well.

如果那个总与头部发送的校验相同，那就一切正常。

As the name suggests, it does this by checking the sum of the data.

正如名称所暗示的，它是通过检查数据的校验来完成这一工作的。

You might think that limiting a parity check to half the bits makes it less effective, but when it's done in conjunction with other well-chosen parity checks, it counterintuitively gives us something more powerful.

你可能会认将奇偶校验限制在一半的位上会使其效果减弱，但当与其他精心选择的奇偶校验结合使用时，它反而出乎意料地提供了更强大的功能。

In UDP, the checksum value is stored in 16 bits.

在用户数据报协议中，校验值存储在16位中。

Needless to say, there is more code to write here, like doing the meta-parity check to detect two-bit errors, but the idea is that almost all of the core logic from our scheme comes down to a single xor reduction.

不用说， 这里还有更多的代码要写，比如进行元奇偶校验来检测两位错误，但核心思想是的方案中的绝大部分逻辑都归结一个异或运算。

If you're wondering what happens if a parity bit itself gets affected… well you can just try it.

如果你想知道当奇偶校验位本身受到影响会怎么样… … 好吧，你可以自己试试。

UDP headers also include something called a checksum, which allows the data to be verified for correctness.

用户数据报协议头也包含一个称校验的东西，可以用来验证数据的正确性。

Second, TCP requires that once a computer has correctly received a packet – and the data passes the checksum – that it send back an acknowledgement, or " ACK" as the cool kids say, to the sending computer.

其次，传输控制协议要求，一旦计算机正确接收到一个数据包——并且数据通过了校验检查——它就需要向发送方计算机发送一个确认，或者用酷孩子的话说，“ACK”。