PC机与AVR单片机之间串行通信的实现

基于RS232串行通信协议，阐述了一种PC机与AVR系列单片机Atmega128之间串行通信的实现方式，实现了PC机与单片机间数据的双向传输。其中PC机为主发送端，单片机为主接收端。硬件上，简单介绍了利用MAX232E芯片解决PC机与单片机电气规范不一致的方法。软件上，PC机端通信程序采用C语言嫡程，运用Turbo C库函数bios.h中提供的调用BIOS软中断的函数bioscom()实现；单片机端通信程序采用C51嫡程，使用UART接收结束中断、UART发送结束中断。本文提供了相关C语言和C51源程序。     

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。     

基于单片机控制的点阵汉字显示屏

介绍了基于AT89C51单片机的汉字显示系统。该系统由控制、显示、存储和通信电路组成，其中该显示屏可利用AT89C51的串行口和电平转换芯片和PC机进行通信，并能通过PC机与单片机进行通信以实时修改其显示内容。     

AT24C256在单片机系统中的应用

详细介绍了AT24C56芯片的特性、引脚排列、功能和读写时序，在单片机数据采集系统中利用此芯片保存时钟芯片产生的时钟信号和现场采集到的数据，给出了在单片机系统中应用原理图和部分程序。     

一种VB和单片机进行串行通信的可靠协议

单片机通信的可靠性很大程度上依赖于是否有一个好的通信协议。为了确保通信的可靠性，特别设计了一种以单片机为主控机的基于帧的通信协议，计算机端使用VB，单片机端使用KEILC．本通信协议适用于单片机和计算机点对点通信的情况，共分为三部分：握手帧、数据帧和应答帧。对通信错误的处理，在单片机和VB程序中都给出了详细的错误处理程序，能迅速定位通信错误原因，并有针对性地修改协议。     

基于单片机和PC串口通信的测温系统

介绍了以AT89S52单片机为核心的温度控制系统的工作原理和设计方法。系统由芯片DS18B20采集温度信号传输给微控制器,通过外围设备LCD1602显示现场温度值,并设计上位机程序通过串口通信实时获取温度。系统设计包括硬件电路设计、软件设计。单片机程序采用C51,在KEIL开发环境中调试通过完成;PC后台软件采用VB6.0完成。给出了前后台软件设计流程图。最后给出了设计实现的硬件实物图和采集到的前后台温度显示结果。     

MCS-96单片机和PC机的串行通讯

介绍了MAX232芯片的使用，给出MAX232接口通信电路，以及MCS-96单片机与PC机的串行通信程序设计。     

基于AT89C51的数字集成电路测试仪的设计

以单片机AT89C51为核心,通过串口与下位机通信,设计了一种通过电脑操作,单片机控制的数字集成芯片测试仪,该系统能对常用的20种74系列数字集成电路作出准确快速的功能检查。系统主要由控制及测试、上位机通信两部分组成。控制及测试部分以单片机AT89C51为核心组成,上位机通信部分由Vb编写的可视化用户界面和电平转换电路MAX232组成。     

基于USB总线的PC机与单片机的通信

介绍了通过USB总线在PC机与单片机之间通信的实现方法。简述了USB总线的工作方式,详细描述了单片机实现通信的编程思想。并以Philips公司的控制芯片为例,通过单片机数据总线,实现PC机与单片机之间原始数据和处理结果的有效传递,最后给出了部分程序的实现。     

用于监控的图像采集与处理系统

本文介绍了一视频图像采集处理系统，可用于车辆的安全监控，系统主要功能包括单片机控制ISP—PLD器件实现对视频头的图像高速采集与存储。单片机图像压缩与PC机串行通信实现图像数据的传输；在PC机端实现图像处理和显示等。     

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.     

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     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first