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vc串口通讯函数，已经包装好，可以直接用，

时间系统中的年月日转化为儒略日。编程语言为matlab。-Time in the system date into Julian day. Programming language for matlab.

Excel的10个实例模板，有关VBA的-Excel template of the 10 instances, the VBA" s! ! ! !

Qt界面编程，多线程编程例子，演示了什么时候需要多线程，对于运算量复杂运算，单独开线程，防止界面失去响应。否则，在运行到运算量复杂部分，界面失去消息循环，会导致界面卡顿。

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Open source PHP POS for small to medium sized companies

DOS下的fc文件比较工具，自动输出文件差异。-fc under the DOS file comparison tools, automatic output files difference.

windows ce权威指南，供需要使用-windows ce authoritative guide for the need to use

通过RS232接口使用按键输入和系统控制

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