硬件接口

The article introduces the kinds of multi-function Watt-hour meter used at home,the corresponding interface of communication,and protocol of communication.

介绍了当前国内使用的三相多功能电能表的类别及其对应的通信接口、通信规约；描述了通用自动抄表模块的原理、硬件组成、软件构成及其在抄表系统中的应用。

Altera Corporation system to the Cyclone FPGA series of digital platform, microprocessor, bus, Digital Frequency Synthesizer, memory and I / O interface hardware concentrated in an FPGA, the use of direct digital frequency synthesis technology and digital modulation waveforms required to achieve the rise, Using FPGA ROM storage of the DDS waveform table, and make full use of on-chip resources, improve the system's accuracy, stability and robustness.

系统以 ALTERA公司的 Cyclone 系列 FPGA 为数字平台，将微处理器、总线、数字频率合成器、存储器和 I/O 接口等硬件设备集中在一片 FPGA 上，利用直接数字频率合成技术、数字调制技术实现所要求波形的产生，用 FPGA 中的 ROM 储存 DDS 所需的波形表，充分利用片上资源，提高了系统的精确度、稳定性和抗干扰性能。

Computer technologies including interruption technology, DMA technology, EMS technology and XMS technology are integrated in the system. The two key problems, real time multi-task processing and multi-circle uninterrupted measuring are effectively solved. Owing to the adoption of objectoriented technology, the software structure of the developing system is greatly simplified. As a result, the developing efficiency of the software is greatly improved.

本研究初步完成了电控开发系统的开发，该系统利用PC机和通用功能板等标准硬件，并开发了测控接口板和功率驱动板等专用部件，使所开发的电控开发系统具有开放式和组合式结构，减少了电控开发系统的成本，并使其具有很好的适应性和发展性，通过综合运用中断技术、DMA技术以及EMS和XMS技术等多项计算机技术，使电控开发系统不仅具有了ECU的功能，而且还具有多参数多循环同步测量和实时人机交互处理等能力。

In the course of special switch-? design, the main research includes: administrable fast Ethernet switch-; hardware design, referring to SNMP, self-define the Community Network Management Protocol, the switching chips driver and application program interface realization, management software agent design, Systematic test.

楼道交换机开发过程中涉及的主要工作包括：可管理的快速以太网交换机的硬件设计；参考SNMP自定义本交换机的社区网络管理协议；交换机芯片驱动及应用程序接口的实现；交换机管理软件的AGENT部分的编制；系统调试／测试。

This design greatly improves the reliability,aseismicity and anti-interference of control system. PC/104 bus ; Optical fiber transceiver module ; CPLD ; Optical fiber ; Self-healing

本文设计的PC/104接口板，由于采用了复杂可编程器件CPLD和CAN总线技术，因此节省了硬件资源，提高了抗干扰能力。1 CAN总线1.1概述CAN总线最早由BO

In the thesis, firstly, the design idea and plan of miniaturization of the shallow multi-beam bathymeter were researched. In order to realize the system miniaturization, the redundant reliability might facilitate the multi- equipment interconnection, exchange, operates mutually introduces and designs realizes hardware platform in a body of based on embedded μCLinux system, processing and the interface communication, and completes in view of this platform μCLinux operating system transplant, as well as Bootloader compilation and modulation.

本文主要研究内容是：首先研究了浅水多波束测深仪的设计思想和方案，论文中为实现系统的小型化，高可靠性可以方便多设备互联、互通、互操作引入并设计实现了基于嵌入式μCLinux操作系统的集信息采集，处理和接口通信于一体的硬件平台，并完成针对此平台的μCLinux操作系统的移植，以及相应的Bootloader编写调制。

This paper studied a new calorimetry system of data transferring,processing and controlling,which based on the PCI bus.

研究了一种基于PCI总线数据传输、处理、控制的新型量热仪系统，给出了详细的系统控制方案，介绍了PCI总线接口芯片PCI9052在ISA模式下的相关硬件设计、寄存器配置以及驱动程序模块设计思路。

This terminal adopts DM642 as the processor, combines with the H.264 video compression algorithm which has highly efficient compression ratio, and sends constringent video data by wireless network. The key technique in the process of designing and realization is introduced, including the structure of software and hardware for the monitoring terminal. The design and realization of embedded network interface based on PPP protocol are analyzed, and a design method based on the HDLC API is given according to the NDK of TI Company.

该终端采用DM642作为处理器，结合高压缩比的H.264视频压缩算法，并通过无线网络发送视频数据；介绍了该终端设计和实现中的关键技术，包括监控终端的软、硬件结构；分析基于PPP的嵌入式网络接口的实现方法，并根据TI的网络开发包提出了一种基于HDLC API的设计方法。

This thesis is on the base of this system'hardware , explaining how to use the interrupt of a MUC,and the dynamic scan of seven-segment digital displayer and button-detecting and shake-eliminating.

本论文是基于此交通灯控制系统的硬件电路，讲述了单片机外围电路的连接，单片机 I/O 接口的使用，按键的连接与检测，数码管的扫描与驱动。

In the hardware design of acquisition system,PCI excusive chip,CPLD and buffer memory are adapted to achieve DMA transfer between computer and peripheral with steady-going transmission speed of 50MB/S.

在数据采集卡硬件电路设计中，采用了&PCI专用接口芯片+CPLD+缓存&模式，实现了计算机与外设间的DMA方式传输，数据传输率可稳定在50MB/S。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。