基于RS 485总线自动清洗控制器串口通讯系统的设计

介绍以VC^ 6.0 MSComm控件为开发工具，使用自定义的通讯协议实现PC机与80C552单片机基于RS 485总线的多机串口通讯系统的设计。给出了RS 485串行通讯系统的硬件构成、下位机的程序流程图以及上住机通讯程序的部分源代码，并通过具体应用证明了本系统的可靠性。     

基于Windows98平台的多点监控系统

利用RS－485串行通信标准实现了某化工系统的多点微机监控系统,介绍了该系统的通信协议,并给出用VC^ 6．0编写的上位机的通信程序代码以及下位机80C196的通信程序流程图。     

单片机监控程序的实现

首先分析了单片机（80C196为例）监控程序的实现;介绍了在Win98平台使用VisualC^ 6．0实现串行通信,以及如何利用串行通信将汇编后的二进制用户程序发送至单片机执行。     

基于VC++6.0的PC机与单片机之间的串行通信

介绍了在Windows系列（Windows 98/2000/XP）环境下，如何利用VC^ 6.0的通信控件MSComm来实现PC机与单片机之间的串行通信。硬件电路中，采用MAX232AESE芯片解决了PC机与单片机之间通信连接电平的不一致问题；软件部分，分别利用VC^ 6.0的汇编语言，给出了他们之间的通信程序。     

PIC系列单片机与PC机串行通讯的实现

本文讨论了PIC系列单片机与PC机串行通讯的实现方法.从硬件设计、PIC单片机通讯程序设计、C 环境下使用Pcomm Library软件包的有关函数编制PC机的通讯程序等方面进行了论述.     

PIC系列单片机与PC机串行通讯的实现

本文讨论了PIC系列单片机与PC机串行通讯的实现方法。从硬件设计、PIC单片机通讯程序设计、C++环境下使用Pcomm Library 软件包的有关函数编制PC机的通讯程序等方面进行了论述。     

单片机I/O口模拟串行通讯的C51实现方法

目前在多数应用场合中大多使用51系列和PIC系列的单片机,51系列的单片机通常只有一个异步串行通讯接口,而PIC系列的单片机的某些型号还没有异步串行通讯接口。在单片机和多个PC之间,以及多个单片机之间的多机通讯中,UART异步串行通讯接口就不能满足应用需求,这时就需要用硬件来扩展UART口,这样必然会增加系统成本和占用单片机的I/O资源。现在单片机普遍采用C51编写各种程序,相对于汇编而言,C51编写的程序在可读性和可移植性方面都显示了明显的优势。本文介绍一种用AT89C52单片机的普通I/O口实现异步串行通讯的方法,整个软件程序用…     

SDI窗口中不同用户界面切换的实现

介绍了VC^ 6．0下在SDI窗口中实现各种视图及相应工具栏和菜单栏进行切换的一种方法，并给出了关键的实现函数。     

用Delphi实现上位机与PIC单片机的串行通讯

介绍了用Delphi实现上位PC机与PIC单片机之间串行通讯的方法。详细介绍了使用的Speeomm控件的属性，方法和事件并给出一个实现串行数据传送的主要程序。     

使用消息机制实现内部进程通讯

通过编制一个主控软件和一个受其操作的底层工作软件来阐述如何用VC^ 6．0通过消息来实现内部进程通信。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks