plugboard

Development of a Universal Radar Digital Plugboard Test Instrument

通用雷达数字插件测试仪的研制

or would be incorrect and lead to every plugboard statement except the correct one .

如果它是错误的，就会推导出除了正确的之外的每一种情况。

This , like the rotor order , plugboard and ring-setting would be common to every operator in the network .

这些与盘位、带位和配线板一样，是每个操作员都非常熟悉的。

As so far described , the operation would require the trying out of one plugboard hypothesis at a time .

像刚才描述的，每次操作需要对配线板进行一个假设。

The more important complicating feature , however , was the attachment of a plugboard .

然而，更重要的复杂特性是配线板，

Maximum allowable deflection of tray column plugboard controlled capstan lathe

板式塔的最大容许挠度插销盘控制式转塔车床

This means that the plugboard must contain the swapping ( EO ) .

这就意味着配线板一定包含（EO）对换。

The difficulty , of course , was that the military Enigma did use a plugboard ,

当然，现在的困难是，军用谜机使用了配线板，

Then the cipher clerk would set up his Enigma with the specified rotor order , plugboard and ring-setting

操作员首先要给他的谜机设定盘位、带位和配线板，他会转动转盘，

So the plugboard left unaffected this useful - but dangerous - aspect of the basic Enigma .

因此，配线板并没有影响这个有用却又危险的性质，

It was essential to the principle of the method that these particular letters had to be among those left unaffected by the plugboard .

这个方法还有一个限制：这些特定字母必须是不受配线板影响的。

There are only 26 possibilities for the effect of the plugboard on A , and so we can think about trying them out .

配线板对A的改变只有26种可能，所以我们可以考虑把它试出来。

There would be 1305093289500 ways of connecting seven pairs of letters on the plugboard , for each of the 6 × 17576 rotor states .

如果一个配线板可以对换7对字母，那就有1，305，093，289，500种配线状态注，对于每一种配线状态，又有6×17576种转盘状态。

We may start by taking the hypothesis ( AA ) , i.e. the supposition that the plugboard leaves the letter A unaffected .

我们先假设（AA），也就是假设配线板不影响字母A。

To be explicit , the order of the three rotors was laid down in written instructions , and so was the plugboard and ring-setting .

确切来说，操作指南中讲解了三个转盘的次序，配线板以及带位设定。

Suppose now that the letters LAKNQKR are known to be the encipherment of GENERAL on the full Enigma with plugboard .

假设现在已知，有一台带有配线板的完整谜机将GENERAL编码成了LAKNQKR。

they had beaten the system . The basic principle of using an Enigma machine was that its rotors and rings and plugboard would be set up in some particular way ,

谜机的基本原理是，将它的转盘、带子和配线板，设定到某个选定的初始状态，

Quill faceplate plugboard controlled capstan lathe

插销盘控制式转塔车床

There being far more possible chess positions than plugboard positions for the Enigma , however , the general von Neumann theory had nothing of practical value to say about the game .

国际象棋的所有局面，比谜机的配线板设定还要多得多，但冯·诺伊曼理论并没有考虑到实用价值，

requiring circuitry for the simulation of ' implications ' flowing from a plugboard hypothesis , and means for recognising not a simple matching , but the appearance of a contradiction .

它要使代表结果的电流，流过一个假想的配线板，而且并不是简单地识别一个匹配，而是找出其中的矛盾。

It is realized that the cupola being totally closed by using the synchronous motor , dual rack plugboard , location detector , charging device and the system of sucking gas and eliminating dust .

采用同步电机双齿条插板、料位探测器、加料装置和炉气抽吸除尘系统实现冲天炉全封闭熔炼；

Technically , this was achieved by attaching wires , with plugs at each end , into a plugboard with 26 holes - rather like making connections on a telephone switchboard .

技术上来说，是在电线的一端安上插头，插入一个有26个孔的配线板，

What follows is an exploitation of the fact that there is only one plugboard , performing the same swapping operation on the letters going into the rotors as on the letters coming out .

接下来，利用这样一个事实：字母在进入转盘之前，和从转盘出来之后，经过的是同一个配线板。

Radar test plays an important role in modern radar system . There are the following advantages of our universal radar digital plugboard test instrument : universality , high test speed , simple structure , convenient operation , low cost and so on .

雷达测试在现代雷达系统占据着十分重要的地位，我们研制的通用雷达数字插件测试仪有着良好的通用性、测试速度快、结构简单、操作方便、价格低廉等优点。

The crucial discovery was that something like this could be done for the actual military Enigma , with its plugboard swapping taking place both before and after entry into the rotors of the basic Enigma .

这里面还有一个至关重要的发现，那就是该思路同样可以用于转盘两端同时使用配线板的军用型谜机。

the result of pressing the A key would be to send a current through the plugboard wire to P , then through the rotors and out again to N , then through the plugboard wire to Q.

那么产生的结果就是，按下A键，电流会通过配线板传到P，然后由转盘传到N，最后再由配线板传到Q。

The reason for doing this was that the analysts had noticed that the lengths of these cycles ( in this example , 11 , 11 , 2 , 2 ) were independent of the plugboard .

这样做的原因是，分析人员发现，这些轮换的长度（在这个例子中是11，11，2，2）与配线板无关，它们只取决于盘位。

It can be seen that the sheer number of plugboards is not in itself the problem , by considering an entirely hypothetical machine , in which a plugboard swapping is applied only before encipherment by a basic Enigma .

可以看到，假设有一台谜机，只在输入转盘编码之前使用一次配线板，那么配线板引起问题就不难解决。

Again , the ' contradictions ' and ' consistency ' conditions of the plugboard were concerned only with a decidedly finite problem , and not with anything like Gdel 's theorem , which concerned the infinite variety of the theory of numbers .

配线板的矛盾或相容，只是一个确定的、有限的问题，并不是像哥德尔定理那样，涉及到变化无穷的数论。

Because of the symmetrical use of the plugboard both before and after the passage of the current through the rotors , it would preserve the self-inverse character of the basic Enigma , and the feature that no letter could be enciphered into itself .

由于配线板在输入前和输出后都要使用，因此谜机仍然保持着自反性，而且没有任何字母可以在编码后保持不变。