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use of IC cards issuers of prepaid PB VF BCB DELPHI VC
使用IC卡发卡机构的预付费PB VF BCB DELPHI VC源程序,对其进行了详细说明
- 2023-05-30 12:50:03下载
- 积分:1
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SZ328串行通讯驱动及应用开发包,为2个CPU间协议通讯应用实例.
SZ328串行通讯驱动及应用开发包,为2个CPU间协议通讯应用实例.-SZ328 serial communication driver and application development kit for the two inter-CPU communication protocol application.
- 2022-10-04 15:25:03下载
- 积分:1
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senior network communications programming is programming examples of serial comm...
高级网络通信编程实串口通信编程实例网络流量监控网站下载网络五子棋系统语音聊天远程监控赠送实例类似网络蚂蚁的断点续传程序网络多播程序界面美观的文字聊天程序语音电话-senior network communications programming is programming examples of serial communications network traffic monitoring website network voice chat system Gobang RMON presented examples of similar networks ants HTTP procedures multicast network interface procedures to the letter beautiful voice chat program
- 2022-03-19 04:13:50下载
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从串口读取数据,有两种方法,1、每接收一个EV_RXCHAR,就用ReadFile读一次,这样我觉得太恐怖了。2、接收到一个EV_RXCHAR后,等一定数据量的...
从串口读取数据,有两种方法,1、每接收一个EV_RXCHAR,就用ReadFile读一次,这样我觉得太恐怖了。2、接收到一个EV_RXCHAR后,等一定数据量的CPU周期(GetTickCount),再一次性读取缓冲区里的数据。这样做,一般情况下不会有问题,但是,如果数据很多,过了“一定数据量的CPU周期”,还没收完数据怎么办?就会少读数据了。 我用三个线程序来完成串口数据的接收,其实就是第一种方法的变种: 一个侦听EV_RXCHAR,一个对EV_RXCHAR进行分析,其实就是超时判断。如果接收到一个消息后,一段时间没收到下一个EV_RXCHAR,就认为是一个数据包的结束。这个线程就会通知数据接收线程,进行数据接收。一般同一包数据,两个字符之间的时间间隔,应该很小了吧,而两个数据包之间的间隔,应该不会太小吧!(这个地方我不清楚,猜的:( :) )最后一个线程,是接收数据的。-read data from the serial port, there are two methods, one, each receiving a EV_RXCHAR, on the ReadFile read, I think this vote. 2, received a EV_RXCHAR after a certain volume of data, such as CPU cycles (GetTickCount), and the one-time reader, the data buffer. To do so, under normal circumstances there is no problem, but if many of the data, and after a "certain amount of data the CPU cycles," also confiscated End Data how do? Few will read the data. I used three lines to complete serial data reception, the first method is a variant : an interception EV_RXCHAR, one pair of EV_RXCHAR analys
- 2023-03-23 09:55:03下载
- 积分:1
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a VB language, computer COM port for data transfer procedures.
一个VB语言编写的,用计算机COM口进行数据传输的程序。-a VB language, computer COM port for data transfer procedures.
- 2022-09-24 14:30:03下载
- 积分:1
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这是VB编写的一个通信协议的使用过程中,实现富…
这是利用VB编写的一个通信协议程序,能实现通讯测试功能-This is the use of VB to prepare a communication protocol process, to achieve functional communication test
- 2023-01-25 14:10:03下载
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pb9com Contents : PowerBuilder 9.0 in the development of the COM achieve example...
pb9com目录:在PowerBuilder 9.0实现COM开发的例子;-pb9com Contents : PowerBuilder 9.0 in the development of the COM achieve example;
- 2022-10-10 19:30:03下载
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COM
基于COM技术的组态软件研究与实现,硕士论文,对组态软件的研究与开发有一定的帮助-COM-based configuration software research and realization of a master" s thesis on the configuration software research and development is certainly helpful
- 2022-04-25 11:39:18下载
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港口的读者
Port Reader
RS232, 485
- 2023-01-01 22:20:03下载
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这是非常有挑战性的题目。对于用户输入的任意一个平面函数f(x),绘制出其函数曲线。这里最关键的技术难点就是如何实现计算表达式的值。在《编译原理》和《数据结构》的...
这是非常有挑战性的题目。对于用户输入的任意一个平面函数f(x),绘制出其函数曲线。这里最关键的技术难点就是如何实现计算表达式的值。在《编译原理》和《数据结构》的书中,都有对表达式运算方法的论述。说实在的,在编译型计算机语言中实现对用户输入表达式的运算是非常困难的。需要对表达式进行扫描,去括号,按照运算符的优先级生成2叉树,然后遍历该树生成逆波兰表达式,再然后通过栈的方法进行运算。如果在表达式中再包含有函数的话......描述起来都麻烦,更不要说用程序实现了:-(-This is a very challenging issue. For user input an arbitrary planar function f (x), mapping out its function curves. Here the most critical technical problems is how to achieve calculated the value of the expression. "Compiling Principle" and "data structure," the book, have right of expression Operational discussed. Indeed, the computer language compiler to achieve expression of the user input operation is very difficult. Need to scan expression to the brackets, in accordance with the priority Operators Generation 2-ary tree, and then traverse the tree generated reverse Polish expression, and then through the stack approach to computing. If the expression again contains the function described ...... these are trouble, not to mention t
- 2022-02-25 13:48:40下载
- 积分:1