2 . to verify the vmebus controller modules practically , the dissertation demonstrates a method using the personal computer to communicate with the fpga trough the usb interface . the works finished includes the hardware connection between usb chip and fpga , and the software design of the usb chip 2 .用通用串行总线( usb )实现pc机与vme数据传输模块之间的通信,验证了模块设计的正确性,工作包括usb芯片与fpga的硬件电路连接和usb芯片的软件设计。
Personal computer , as an intelligent terminal , is developing persistently . the universal serial bus ( usb ) interface structure brings a technical revolution to pc peripheral apparatus . the usb interface technology is also be used in the terminal of telecommunication system introduced in the thesis 作为智能终端的pc机近年来发展迅猛，尤其是通用串行总线( usb )的出现，给pc机的外设带来了一场技术革命，并被广泛用于无线数字通信系统终端。
The universal serial bus ( usb ) is specified to be an new industry standard extension to the pc architecture . it was developed by a coalition of pc industry companies . usb is a serial cable bus that supports data exchange between a host computer and a wide range of simultaneously accessible peripherals Usb ( universalserialbus通用串行总线)总线是pc体系中的一套全新的工业标准，是由intel为首的七家公司于1994年11月推出的，专用于低、中速的计算机外设。
The type of wireless transmission detaches the part of data acquisition from the part of data processing in order to improve the monitor system upon the practicability and security for the person . the universal serial bus is a kind of newer bus interface ' s criterion than other buses in the computer ' s technology . in the design , the universal serial bus is used as the interface between the system and the computer that makes the design possess a lot of features , such as easy operation , plus and play , none of exter nal power , and need not to install 无线数据传输方式将数据采集部分与处理部分分开，提高了监护系统的实用性和对人体的安全性；通用串行总线是一种较新颖的计算机总线接口规范，本系统使用通用串行总线作为系统与计算机的接口方式，使得本系统具有操作简便、体积小巧、即插即用、支持热插拔、无须外接电源、使用无须安装等特点。
The 16 - bit adcs inside the single - chip microcomputer are used in the instrument to measure the output signal of the high frequency tuner , two12 - bit dacs are used to give the control signal needed by programmable gain amplifier . the system has the characteristics such as light volume , light weight , and low cost , which make it more applicable 该标量网络分析仪能方便地测试一个系统的传输特性和反射特性,与pc机通过通用串行总线( usb )连接,实现被测网络频率特性的图形显示、保存、打印及参数设置功能。
Usb2 . 0 ( universal serial bus ) is nowadays becoming a standard of the personal computer peripheral interface , due to that , lots of novel devices emerged , such as mobile hard disk , flash memory etc . however , the key technology of usb2 . 0 interface is only possessed by a few companies abroad such as intel , philips , while blank in china Usb2 . 0 (通用串行总线)是目前pc外设接口的标准，也正是因为usb接口出现，才诞生了诸如移动硬盘、闪存等一批新颖的外设。但是usb2 . 0接口技术在国内还是一片空白，只被包括intel ， philips等少数国外大型半导体厂商占有。
With the development of modernization of science and technology , the data acquisition card ( dac ) based on the traditional industry bus , such as isa , pci , has some defects in practice . so another kind of dac , based upon dsp ( digital signal processing ) , with usb ( universal serial bus ) interface , is presented , which has the virtue of flexibility , high speed , simple configuration , and is easy to update 随着科技现代化的发展，传统的基于isa 、 pci接口的数据采集卡在使用中表现出许多弊端，针对这种现象，结合新兴技术，本文提出了一种基于usb ( universalserialbus通用串行总线)接口的dsp ( digitalsignalprocessing数字信号处理器)数据采集卡的实现方案，具有灵活、配置简便、易于更新等特点。
As a new interface caters for rapid development of computer peripheral equipment , universal serial bus ( for short usb ) dispels astriction of communication through traditional serial port and parallel port . it is very suitable for real time image data transmission , which requires high speed . this theme describes two - circuit systems , which utilize usb interface to data from a digital image sensor to pc 为了迎合计算机上设的快速发展以及消除计算机外设通过串、并口的通讯的局限性，出现了新的计算机外设接口usb (通用串行总线) ，这种新型接口对于实时的视频传输很适用，本文设计了两套电脑眼基于ez - usb2131q的usb接口系统。
Universal serial bus ( usb ) is new technology about interface in computer application usb has been used widely since the windows operation system supported the usb interface in computer the major goal of usb was to define an external expansion bus which makes adding peripherals to a pc as easy as hooking up a telephone to a wall jack the program ' s driving goals were ease - of - use and low cost these were enabled with an external expansion architecture universal serial bus （ usb ） is one of the most important developments in pc peripheral interconnect technology since the introduction of serial and parallel ports in the early 1980 ' s the benefits of usb ， such as ease of use ， plug and play ， high performance ， and reduced overall system cost ， are just a few of the reasons this technology has gone from specification to product development in less than 2 years 通用串行总线（ usb ）是应用在pc领域中的新型接口技术，自从windons98操作系统全面对usb接口支持后， usb逐渐进入实用阶段。利用usb可以实现较传统方式更有效、更经济、更多扩展的pc外设与pc相连。通用串行总线（ usb ）作为一种新兴的计算机外设总线标准，从标准的出现到大规模的应用，仅用了短短几年的时间，这一切都得益于它易用、真正的热插拔、高性能和系统造价低廉等忧点。
Universal serial bus ( usb ) is a connectivity specification which aimed at periph - - erals connecting outside the computer in order to eliminate the hassle of opening the computer case for installing cards needed for certain devices . usb provides for ease of use , expandability , and spsed for the end user , so usb will become the next protocol standard of computer peripherals 通用串行总线( usb )系统是针对现有的计算机( pc )外围设备连接体制所具有的规格混乱、不支持热插拔等缺点而提出来的新一代pc通信协议，其具有高速、双向、同步、低成本、可动态连接等优点，将成为计算机新的接口标准。
