上传个考勤系统,希望别人也能用.该代码只能算初级的东东,软件代码复用性不高,重复代码比较多.唯一感觉有点取鉴的可能就是端口和dll的连接,还有线程的使用,本想改一改,但是手头没有考勤机了,对应考勤机是890C的.-From a performance appraisal system, I hope others can use. The code can only count the primary Dongdong, software, code reusability is not high, repeat the code more. The only feeling a little check Kam is probably dll ports and connections, There are threads to use, simply wanted to, but do not have attendance machine, and the corresponding attendance machine is the 890C.

Visual Basic串口通信程序设计 mscomm.vbx通信控件可直接从vb的toolbox中加入窗体form，即可用其进行通信-Visual Basic serial communication program design mscomm.vbx directly Communication Control Vb from the toolbox window into form, can be used for communication

测量温度上下位编程代码，测试绝对好用，欢迎学习使用，请勿用于商业用途。-vbrs232 c avr

简单的串口通信程序!通过按键来实验是否将主机中相应缓冲区中的内容传送给从机!主机状态改变,按键传输时,从机状态也将改变!-Simple serial communication program! Through the keys to the experiment whether or not to host the corresponding buffer content transmitted to the slave! Host state changes, button transmission, from the state machine will change!

时间调度相关的开源代码，时间调度相关的开源代码-quarts

RCC底层通信程序 包含协议和测试报告-RCC SerialPort

rs485通信协议的规定，定义了串行通信协议中传输的信息内容及使用格式，可以参考-rs485 communication protocol requirements, defines the serial communication protocol to transmit the information content and the use of format

BCB串口通讯源码示例程序。利用winapi函数，而非控件。-BCB examples of serial communication program source. Use WINAPI function, rather than control.

一个关于Com端口调制的程序。包括向Com端口发送数据及从Com端口接受数据两部分。-a Com port on the modulation process. Including Com port and send data from the Com port to accept data in two parts.

modbus通信协议中文版，详细介绍了modbus协议，LRC校验，CRC校验等，并给出了C语言例程代码。-modbus conmmunication(chinese)- Modbus protocol,LRC,CRC,how to program with C