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为一条条线，一个阈值，低于个标准，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.

在我们示例中，来得到一个校验和为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.

在种情况下，我们正在考虑其奇偶校验值是二进制和每个数位中 1 数量。就是为什么我们可以说 2 和 0 都是偶数，可以被视为等价物。

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)" .

作为动词，例如，“to proof”意味着审阅一段文以确保没有错误； 被称为“校对” 或简称为“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和扇区，但它是错误， 现在你需要串联你校验和。

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

就像前个校验让我们确定了列，接下来个则让你确定了行。

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

其他人则认为， 好吧，其他人纠正错误信息一事实本身就是一个很好校验机制。

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

样做原因与称为奇偶校验概念有关。

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来计算校验和：89上111再上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，我们处理业务校验、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个特殊位称为“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.

如果我们将其作为整个块奇偶校验位，它实际上可以让我们检测到双比特错误，尽管我们无法纠正它们。

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

如果那个总和与头部发送校验和相同，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，它是通过检查数据校验和来完成一工作。

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.

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

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

在用户数据报协议中，校验和值存储在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， 里还有更多代码要写，比如进行元奇偶校验来检测位错误，但核心思想是我们方案中绝大部分逻辑都归结为一个异或运算。

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为校验和东西，可以用来验证数据正确性。

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和检查——它就需要向发送方计算机发送一个确认，或者用酷孩子们话说，“ACK”。