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RS485通信的源代码，可进行两个系统之间信号的传递，介绍其编程规则(RS485 communications source code, can be passed between the two signal systems, introduces its programming rules)

包含了C8051的基本例程，如流水灯，IO口控制，蜂鸣器，串口通信等(C8051MCU example programs)

编写一段程序 统计从1000年到1999年之间闰年的个数 最后输出到屏幕上来(writing a program to sum up the numbers of leapyear between 1000 and 1999.Finally,showing the result on the screen.)

DS1302+DS18B20+无线遥控应用程序(DS1302+ DS18B20+ wireless remote control applications)

1000以内所有的完数，比较简单，用于学习和交流(1000 all finished within few, relatively simple, for learning and communication)

此程序是CFD中用户自定义中的定义速度变化的程序，输入到Fluent中控制入口速度(This program is a change of user-defined in the definition of speed in CFD program, the input to control the inlet velocity in Fluent)

国内专业手机生产厂商PCBA验收检验标准！！！(Professional mobile phone manufacturer PCBA test)

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FreeRTOS_KL16FreeRTOS是一个迷你的实时操作系统内核。作为一个轻量级的操作系统，功能包括：任务管理、时间管理、信号量、消息队列、内存管理、记录功能、软件定时器、协程等，可基本满足较小系统的需要(FreeRTOS is a mini real time operating system kernel. As a lightweight operating system, features include: task management, time management, semaphores, message queues, memory management, recording function, software timer, coroutine, can meet the basic needs of the smaller system)

说明：  本程序基于单片机实现RTC实时时钟，简单易懂(The program is based MCU RTC real time clock, easy to understand)