目前较为常用的串口有9针串口（DB9）和25针串口（DB25），通信距离较近时(<12m)，可以用电缆线直接连接标准RS232端口(RS422,RS485...

本文详细介绍了DLL编程的方方面面，努力学完本文应可以对DLL有较全面的掌握，并能编写大多数DLL程序。

FPGA的27个很有价值的实例，很有实用价值-FPGA-27 a valuable example of great practical value

This book provides readers with the knowledge of Visual C# concepts. In addition to the concepts explained in the chapters, the book provides readers with several projects that enable them to create Windows applications,Web services,Web applications, and mobile Web applications.The book aims for providing the readers with extensive knowledge of C# so that they are able to develop live projects using C#. The book is aimed at readers with a basic knowledge of programming.

计算机要想访问HD61 202。必须 首先读取状态字寄存器的内容。主要是 要判别状态宇中的 Busy”标志；在 “Busy”标志表示为O时。计算机方可 访问HD61202。-Computer to visit the HD61 202. Status word must first register to read the content. The main building is to determine the status Busy " sign in" Busy " when the sign is expressed as O. Computer may visit HD61202.

哲学家进餐问题是荷兰学者Dijkstra 提出的经典问题之一,它是一个信号量机制问题的应用,在操作系统文化史上具有非常重要的地位。对该问题的剖析有助于学生深刻地理解计算机系统中的资源共享、进程同步、死锁等问题,并能熟练地应用信号量来解决生活中的控制流程,即将生活中的控制流程用形式化的方式表达出来。 假设有5个哲学家，他们花费一生中的时光思考和吃饭。这些哲学家共用一个圆桌，每个哲学家都有一把椅子。在桌子中央是一碗通心面，在桌子上放着5只筷子。（如图所示）当一个哲学家思考时，他与其他同事不交互。时而，哲学家会感到饥饿，并试图拿起与他相近的两只筷子（他与邻近左、右之间的筷子）。一个哲学家一次只能拿起一只筷子。显然，他不能从其他哲学家手里拿走筷子。当一个饥饿的哲学家同时有两只筷子时，他就不能不用释放他的筷子而自己吃了。当吃完后，他会放下两只筷子，并再次开始思考。 规定奇数号哲学家先拿他左边的筷子，然后再去拿右边的筷子；而偶数号哲学家则相反。按此规定，将是1、 2号哲学家竞争1号筷子；3、4号哲学家竞争3号筷子。即五位哲学家都先竞争奇数号筷子，获得后，再去竞争偶数号筷子，最后总会有一位哲学家能获得两只筷子而进餐。 -dining philosophers problem is the Netherlands scholars Dijkstra"s one of the classic, It is a signal to the mechanism of application, the operating system in the history of culture has a very important position. Analysis of the problem to help students understand deeply the computer system resource sharing, process synchronization, and other issues Deadlock, skilled and can be applied to solve the signal volume life of the control flow, about the life of the control flow w

软件工程项目的需求规范模版！我们专业都是用这个进行需求文档处理的！-software projects for the needs of standardized template! We are professionals with the demand for document processing.

不晓得干嘛用的，主要讲的是这个Function Point Counting Rules-not know-- why use, The main speaker is the Function Point Counting Rules

S3C44BOX与彩色LCD的接口与控制-S3C44BOX with the color LCD interface and control

这是我该学期完成的课程设计,还算比较可以,希望大家喜欢.-This is the semester to complete the course design, can be compared fairly, hope you like them.

正确性、健壮性、可靠性、效率、易用性、可读性（可理解性）、可扩展性、可复用性、兼容性、可移植性软件所应具备的知识！-Accuracy, robustness, reliability, efficiency, ease of use, readability (intelligibility), scalability, reusability, compatibility, portability of software should have the knowledge!