常用元器件PCB封装大全，包含各种常用器件的封装，给设计带来方便...

写了一个小程序，听往上说什么将类的申明放在namespace里面的话，该类就不能再派生了，我做的这个程序还可以派生，不知道这是怎么回事

使用EJB实现的网上商城- Uses on-line commercial city which EJB realizes

本源码是用于ad hoc中一种改进的预约多址协议的仿真，具有吞吐量高，支持QoS的特点。绝对可以运行。-source for the ad hoc An Improved PRMA agreement simulation, with high throughput, QoS features. Absolutely can run.

SDRAM

几个无线网络模拟源文件。里面简单实现了无线节点的路由选择过程。-A number of wireless network simulation source file. Inside a simple realization of the wireless routing node selection process.

这些是我到目前在PKU上做出的题目，给大家分享一下。-These are what I currently make in the PKU subject to share with you.

是一款适合任何行业企业的文件文档管理系统，多用于公司内部传阅、批阅、共享公文文件，与其它公司进行业务文件往来之用-Suitable for any industry is a business document management system documents used for internal circulation, marking, sharing document files, and other business documents between companies use

简单的点阵程序，在一个16*16的点阵上显示一个汉字-A simple dot-matrix procedure, a 16* 16 dot matrix display a Chinese character

NTL is a high-performance, portable C++ library providing data structures and algorithms for manipulating signed, arbitrary length integers, and for vectors, matrices, and polynomials over the integers and over finite fields.

滚球游戏意智游戏 问题描述 有八个小洞，序号和分布位置如图。小球从A、B、C（即洞号0、1、2）三个位置之一滚下。如果洞的状态为0时，球向左滚；如果洞的状态为1时，球向右滚。凡是球滚过的洞，状态取反（既由1变0，由0变1）。 现用8位二进制数依次从左到右表示八个小洞的状态。 例： 图中的初始状态为 00000101 时，最多滚入3个球时有 从C洞滚入一小球状态为 ――――＞ 00101111 从B洞滚入一小球状态为 ――――＞ 01111011 从A洞滚入一小球状态为 ――――＞ -bowls game Italy-game description eight holes and serial number and distribution figure. Small ball from the A, B, C (hole No. 0,1,2), one of the fallen three locations. If the state of the hole 0:00 a.m., the ball rolling left; If the state of the hole 1:00, the ball rolling right. Whatever strain at the hole, from the anti-state (both from a variable 0, 0 Variable 1). Now with eight followed by the binary number eight hole, said whatever the state. Cases : Figure the initial states of 00000101, three roll-up ball from C hole rolled over a small ball of----> 00101111 B hole rolled over from one state to the small ball----> 01111011 from A hole rolled over a small ball of---->