逻辑门

Characteristics of a number of gates from the set of all generalized Toffoli gates are studied. Any permutation S is proved to be generated by a n-cycle δ and a permutation τ=i(subscript j, i together. It shows that any neighboring 2-cycle permutation can be generated by at most two NOT gates without ancilla bit.

本文研究了生成Toffoli门集合的可逆逻辑门数的特点，证明了任意置换S可以由n-轮换δ和一个置换τ=i(下标 j，i生成，同时证明了相邻2-轮换可由至多两个NOT门在不增加额外信息位的情况下生成。

By example analysis and experiment result compare,it introduces the usage and peculiarity of Multisim 2001 software platform of EDA technology in design type of experiment study on digital circuits,the advantages and disadvantages of EDA technology experimenthave been compared with actual operation,the important of combining"imitation experiment"and"material experiment"in design type of experiment of digit circuit teaching is put forward in this paper.

目前，国内高校的数字电路实验教学模式主要以2种方式进行：一种是完全采用常规的TTL逻辑器件(如逻辑门、触发器等中小规模集成电路)进行硬件连线测试，大多采用面包板或由多个双列直插座组成的各种实验箱。这种方式容易出现器件接触不良，接线不慎而烧坏芯片、电源等故障，学生实验课时得不到有效利用，影响对学生综合设计性实验能力的培养与提高。

In part one (chapter 2-3), two new methods and systems of optical parallel logic operation are studied. Triple-in Double-out shadow-casting logic operation system is proposed and realized for the first time. Based on this, optical full adder and 3-bit decoder array logic have been obtained. It is the first time to use coding pattern and different reading-writing model to realize BSO-PROM optical parallel logic operation where the time-order operation is avoided, so that the computing speed of optical parallel logic gate which uses this kind of spatial light modulator is increased, and it is successfully used in optical symbolic substitution .

在第一部分，对两种新的并行光学布尔逻辑运算方法及系统进行了研究：首次提出并实现了三输入、双输出铸影光学逻辑运算系统及其由此得到的光学全加器，并提出一种以此为基础的3-比特译码器阵列逻辑，首次利用图形编码和不同的读写模式实现了无时序操作的BSO-PROM光并行逻辑运算，大大提高了这种空间光调制器用作光并行逻辑门的运算速度，使之成功地用于光学符号代换之中。

A logic gate is an AND, OR, NOT, NAND, NOR, or exclusive OR.

逻辑门分为：与门，或门，非门，与非门，或非门，和异或门。

Page 32. There are several logic gate configurations, among them the AND gate, NAND gate, OR gate, NOR gate, EXCLUSIVE OR gate and EXCLUSIVE NOR gate.

有几种逻辑门配置，其中包括：与门，非门，或门，或非门、与非门、异或门和同或门。

NAND gate 403 is a logic gate that performs a NAND Boolean logic function on the UP and DN signals to generate a voltage signal VIN.

NAND门403是对UP和DN信号执行NAND布尔逻辑功能以生成电压信号VIN的逻辑门。

Thus, the output will always be driven by a single transistor, either P- channel or N-channel. Since they are as closely matched as possible, the output resistance of the gate will always be the same, and signal behavior is therefore more predictable. Fig. 3.4 CMOS NAND gate One of the main problems with CMOS gates is their speed. They cannot operate very quickly, because of their inherent input capacitance. B-series devices help to overcome these 24 Lesson 3 CMOS Logic Circuit 25 limitations to some extent, by providing uniform output current, and by switching output states more rapidly, even if the input signals are changing more slowly. Note that we haven't gone into all of the details of CMOS gate construction here. For example, to avoid damage caused by static electricity, different manufacturers developed a number of input protection circuits to prevent input voltages from becoming too high. [3] However, these protection circuits don't affect the logical behavior of the gates, so we won't go into the details here. New Words and Phrases 1. CMOS abbr.

略语互补金属氧化物半导体(complementary metallic oxide semiconductor)逻辑，逻辑学，逻辑性，推理方法补充的，补足的，互补的电池供电的门电路，逻辑门，闸门，控制栅，大门，通道，门口，入口伏特，环骑，闪避基础的，基本的，主要的基本原则，基本原理增强型金属氧化物半导体场效应晶体管(metallic oxide semiconductor field effect transistor)反相器，反用换流器，变极器来源，水源，消息来源，原始资料，发起者源，源极排水沟，消耗，排水漏极排出，喝干，耗尽排水，流干，耗尽相同的，相配的，匹配的匹配有效地，有力地，事实上，实际上无限的东西无穷大无穷的，无限的，无数的，极大的接地的正向偏置的，正偏的或非 25 2。

In addition, several examples showing the realization of three-variable threshold logic function with three-variable universal-threshold-logic-gates are given.

通用阈值逻辑门是一种通用的阈值逻辑门，可以通过改变它的输入、输出的接法实现所有的给定变量数的阈值逻辑函数。

Toffoli gate set is chosen as the basis gate library. Each logic gate in the library is a unitary matrix that can be decomposed into a product of a series of elementary transformation which is referred to as a transformation path.

Toffoli门集被选作基本门库，其中每个逻辑门的矩阵都可以分解为初等变换的乘积。

The pulse sequences for achieving some logic operations of cycles and transpositions of quantum states have been devised.

本文的主要工作包括以下内容：●通过分析在核磁共振实验中实现基本通用量子逻辑门的脉冲系列，设计了实现对量子态进行各种轮换操作、对换操作的逻辑部件的脉冲系列，在实验中用这些脉冲系列实现了预先设计逻辑部件的逻辑功能。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。