本作品采用Atmel公司的AT89C51单片机，以汇编语言为程序设计的基础，设计一个用四位数码管显示时、分的时钟。在实物图中，左边靠近电源的绿色发光二极管（长亮...

Drive smt160 whit ICP and INT

Drive smt160 whit ICP and INT

Boost电原理图，开关电源有时候会用到该电路，可参考其计算变量-Boost electrical schematics, switching power supply can sometimes be used in the circuit, refer to the calculation of variables

fpga重要的技术材料 有关于XILINX得板子-FPGA important technical materials have on board a XILINX

摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用 OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多 径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和 基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波 调制方式―i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果. -Abstract: Based on the communication technology train operation control system (CBTC) is a railway signal direction for the development of cross-frequency division multiplexing OFDM) is a wireless environment of high-speed transmission technology, its high-speed train control information transmission Bian be subject to the Due to the spread of multi-path fast fading caused by the impact of a strong resistance to diseases. This paper first introduces the OFDM technology development and the basic principles, and then on the computer〕 M atlal use its performance simulation will OFDM with the traditional single-carrier modulation-i1, cross-amplitude modulation (1frQAM) against multi-path interference of the 10 properties were compared with a final analysis of

CH372 USB-UART Chip Specification Document,for reference only

大屏幕显示及触摸屏系统设计方案， 本系统软件首先界面精美，操作简便，触控点布局合理，方便触摸，提高触摸准确率。其次系统结构设计合理，充分利用图、文、声、像以及交互性等多媒体特征对用户的操作、信息查询与接收等进行合理导引，以便用户以最少的时间和精力查询到最多的信息-Large-screen display and touch-screen system design, software, first of all, the system interface is beautifully simple, touch points, rational layout, easy to touch and improve touch accuracy. Secondly, the structural design of a reasonable system, make full use of maps, text, sound, such as interactive multimedia, as well as characteristics of the user" s operation, and receiving information such as a reasonable guide, so users with minimal time and effort to maximize the amount of information inquiries

基于RT-Linux的嵌入式数控系统研究,一些总结-Based on RT-Linux embedded NC system, a number of summary

这是关于数字版权管理的一个协议文档，介绍了总体的协议架构，对写OMA的DRM协议的程序员有指导作用。-This is on a digital rights management agreement documents, introduction of the overall framework, on the written agreement of the OMA