详细介绍描述了GPS

Bidirectional LEDs A novel microprocessor interface circuit is described which can alternately emit and detect light using only an LED, two digital I/O pins and a single current limiting re- sistor.

这是基于78k0八位微控制器的空间相位调制技术介绍以及主体程序-78k0 which is based on 8-bit microcontroller space phase modulation technology presentations and the main procedure

在无线通信中使用跳频技术是军事通信中最主要的抗干扰手段之一, 而如果系统中能使用合适的中心频率可以快速跟踪跳频变化的带通滤波器将可以明显改善系统的抗干扰性能。文中从实际应用出发, 比较了几种可用于实现带通滤波器快速变频的方案, 选择了简单、实用的开关电容阵改变带通滤波器中心频率的方案-The use of frequency hopping in wireless communication technology is the most important anti-jamming in military communications, one of the means, and if the system can use the appropriate center frequency can be fast-tracked changes in frequency-hopping band-pass filter will be able to significantly improve the system anti-jamming性能. This paper from the actual application, the comparison of several band-pass filter can be used to achieve the rapid conversion of the program, choose a simple, practical switched capacitor array to change the center frequency of band-pass filter program

ARM开发要点，希望对大家有些用处：）不客气：）-ARM to develop key points, in the hope that everyone be useful:) You

borland的uml设计包-the uml design package

经典计算机体系结构RISC8的源代码（Verilog），包括CPU、内存、寄存器等的实现-classic computer architecture RISC8 the source code (Verilog), including CPU, memory, such as the realization Register

this the rar file which ll be useful for the students -this is the rar file which ll be useful for the students

华为 Quidway 系列多协议路由器，支持 PPP、FR、X25、SLIP、HDLC 等网络协议，用户可通过各种广域网线路接入 Internet 及互联互访。 路由器内置安全防火墙、NAT、RADIUS 安全认证，以及 CALL BACK 等多项互联安全防护功能；并通过 CA 认证协议的验证和 IPSec 隧道协议，在 Internet 上构建安全可靠的网络通道，基于硬件的数据加密，将保密数据加密后在隧道上传输，加密数据有可靠的保密性但牺牲了效率；非保密数据可以通过一般性安全处理在隧道上传输，保证较高的转发速率。硬件加密的算法采用专门的芯片（经过国家相关部门批准）进行加密，密钥长度大于 128 位，并提供高强度的一次一密功能。配合完全自主知识产权的软硬件平台，提供网络的安全互联和数据的安全传输的安全解决方案。 而 "备份中心"的可靠性备份解决方案，实现多种线路之间的任意备份和业务分担，为网络提供业界最坚固的保护屏障，保证网络的可靠运行。-Huawei Quidway series of multi-protocol routers to support PPP, FR, X25, SLIP, HDLC and other network protocols, users can through various WAN lines and Internet access to the Internet visits. Built-in security firewall router, NAT, RADIUS authentication, and a number of other CALL BACK Internet security protection functions; And through CA and validation of the agreement IPSec agreement on the Internet to establish a secure and reliable network access, hardware-based data encryption, data encryption confidentiality the tunnels on the Tunnel, a reliable data encryptio

该论文以CAN总线的实时性问题为研究对象，在系统分析了CAN总线协议的特点并指出CAN总线的主要局限性的基础上，对CAN总线网络通信的实时性问题进行理论分析。 -CAN bus to the paper issues real-time study in the analysis of the characteristics of CAN bus protocol and pointed out that the main limitations of CAN bus based on CAN bus network communication theory in real-time analysis of issues .

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