查询词典 logic circuit

The content of this course includes: fundamentals of logic algebra analysis and design of the combinational logic circuit and sequence circuit common applications of the combinational logic circuit and sequence circuit programmable logic devices Hardware Design Description Language A/D (Analog/Digital) and D/A conversion.

课程的主要内容有：逻辑代数基础、组合逻辑电路及时序电路分析与设计、常用中规模组合逻辑及时序逻辑电路应用、可编程逻辑器件、硬件设计描述语言VHDL、数模、模数转换等。

In the analysis of combinational logic circuit, should take into account gate delay time of the impact on the circuit.

在分析组合数字逻辑电路时，应该考虑门电路的延迟时间对电路产生的影响。

The FPGA integration rate is very high, its component density from tens of thousands of system gates to the number surely system gate different, may complete the extremely complex succession and the combinatory logic electric circuit function, is suitable high speed in, the high density high end numeral logic circuit design domain.

FPGA的集成度很高，其器件密度从数万系统门到数千万系统门不等，可以完成极其复杂的时序与组合逻辑电路功能，适用于高速、高密度的高端数字逻辑电路设计领域。

Then, on the basis of the functional verification, the system architectures of the radio frequency analog front end and the control logic circuit for the passive UHF RFID transponder are studied and designed with low-power design techniques. The RF AFE circuit includes rectifier, matching network, backscatter, regulator, AM demodulator, voltage reference, local oscillator and power on reset circuit, and so on. The control logic circuit contains clock synchronization module, decoding module, coding module, cyclic redundancy checksum module, power management unit, control unit, shift register and memory.

然后，在功能验证的基础上，重点研究了无源超高频射频识别标签芯片射频模拟前端电路和控制逻辑电路的系统架构，并采用低功耗设计技术对其进行了设计，射频模拟前端电路设计包括了整流器、匹配网络、反向散射电路、稳压器、AM解调器、电压参考源、本地振荡器以及上电复位电路等，控制逻辑电路设计包括了时钟同步模块、解码模块、编码模块、CRC校验模块、功率管理单元、控制单元、移位寄存器和存储器等。

Karnaugh map plays an important role in the simplification of logic function and the design of logic circuit.

卡诺图在逻辑函数的化简和逻辑电路的设计中，有着重要作用。

The prerequisite of the correct use of karnaugh map is to full in the map with the given logic function correctly. Karnaugh map can be used to transform logic function into various simplest expressions and check the race and hazard of logic function. It has a wider range of important applications in the analysis and design of combinational logic circuit and sequential logic circuit.

正确运用卡诺图的前提是把给定的逻辑函数正确填图，可以利用卡诺图将逻辑函数化简为各种最简表达式；可以用来检查逻辑函数的竞争冒险等；在组合逻辑电路和时序逻辑电路的分析与设计中更有广泛的重要应用。

A logic circuit called a monostable-to-bistable transition logic element circuit is developed.

设计电路称为单稳态－双稳态转换逻辑单元。

This paper is based on N-type MOS-HBT-NDR circuit to design a new type of logic gate circuits, The use of a monostable-bistable transition logic element logic gates to realize the principle of operation,,and NMOS devices to control the input stage circuit NDR circuit switching action, And the overall modulation circuits I-V characteristic curve.

中文摘要此篇论文是以N型MOS-HBT-NDR电路来设计新型逻辑闸电路，利用单稳态-双稳态传输逻辑闸(monostable-bistable transition logic element，MOBILE)电路的操作原理来实现，并以 NMOS元件来控制输入级电路中NDR电路的开关动作，进而调变整体电路的I-V特性曲线。

Detailly,signals of background magnetic field is filtered by fixed frequency of sample and hold circuit which is supplied by logic circuit,and the signals before objects appear are tracked dynamically which are then compared with the ones after objects appear by comparator circuit,in order to furthest obtain the signals of target magnetic field on the basis of background magnetic field compensation.

运用逻辑脉冲电路为采样保持电路提供固定频率滤除背景磁场信号，并对目标未出现时的信号进行动态跟踪，运用比较电路将目标出现前后的信号进行比较，从而在补偿背景磁场的基础上最大限度地获得目标磁场的信号。

Firstly it introduces relevant technical developments and trends, the task background and significance of the study, then analyzes hardware circuit of using image sensor as images collected, and utilizes the SAA7113 chip to deal with video image beforehand, SAA7113 lets the output of standard digital video signals to storage in FIFO memory, and decodes clock signals, Highlighted microprocessor control external circuit design of false coin and counting, and DSP control external circuit design, such as memory expand ect;Finally analyses CPLD as logic controller to control the logic and scheduling of some part ,and gives the undee emluator of some logic circuit.

文章首先阐述人民币智能分捡器相关技术的发展状况、发展趋势以及课题背景与研究意义；然后设计了利用图像传感器采集人民币图像输出模拟视频信号的硬件电路，以及利用视频解码芯片(SAA7113)对模拟视频图像进行预处理，SAA7113输出的标准数字视频信号存入FIFO存储器，同时还解码输出场、行同步信号、像素时钟信号送入CPLD等部分电路；重点设计了单片机控制验钞、点钞等外围电路，以及DSP控制的外围电路，如存储器的扩展等部分；最后完成CPLD对部分器件的逻辑和时序控制设计，并对逻辑电路的功能进行仿真，仿真结果令人满意。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷