QG8_demo学习板开发板例程 AD转换的例程，辛苦找来。 经过验证是正确的。...

该例程是利用MC9S12DG128中TC0和TC7通道共同完成模拟PWM功能的实例。-The routine is the use of MC9S12DG128 the TC0 and TC7 simulated co-channel PWM function instance.

DS1302的驱动程序,C版的,测试过,好用-DS1302 driver, C version, tested, easy to use

精度为20位的数模转换芯片CS5503数据手册，有需要的朋友可以下来-Low-Cost, 16 & 20-Bit Measurement A/D Converter

1602液晶显示，通过键盘按下去上的数值-1602 liquid crystal display, go through the keyboard by the numerical

ppt格式的，arm7的一个讲座的一部分，对设计lcd非常有用-ppt format, arm7 of a lecture as part of the design is very useful lcd

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4个键盘测试程序 4个键盘测试程序-4 keyboard test procedure four keyboard test procedures

ATmega16数码管实验基数显示，数码管选通输出在前避免了字码在前产生的乱码，Proteus图-ATmega16 base of digital tube experiments showed that the digital control of strobe output of the former to avoid the code generated by the previous garbled, Proteus map

三线式双工 毕业设计 程序和电路图都是正确得-3-wire duplex graduate design programs and circuit diagrams are correct too

本系统主要用于旅游景点记录游客人数，并限制旅客的流量。采用红外传感器通过检测人体红外并对通过人数进行计数，通过红外对管将检测到的数据发送至单片机，单片机处理后送至数码管显示，数码管显示的数据即为通过的人数，并通过设定值限制旅客数量。当游客超量是系统将给出相应的提示，禁止游客再进入。以更好的保护旅游景点的生态环境。-This system is mainly used for tourist attractions recording the number of visitors and limit the flow of tourists. Use of infrared sensors by detecting the human body by infrared and number of people count on the tube will be detected by infrared the data sent to the MCU, MCU after treatment sent to the digital LED display, digital LED display of the data shall be the number of through and through setting limits the number of passengers. When the visitors over-the system will give the appropriate prompts to prohibit visitors from re-entering. To better protect the tourist attractions of the ecological environment.