简易频率计，一个中断，一个定时器，适合初学者学习中断、定时器，动态扫描显示。...

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.

串口，这个程序很好啊啊 ，欢迎下载撒-Serial port, this procedure very well ah ah, welcome to download Caesar

凌阳061a单片机的中断的使用例程。包括定时，时基等例子-Sunplus 061A MCU interrupt routine use. Including the timing, such as time-base examples

51单片机5045看门狗芯片的代码（通过编程）-51 Single-chip watchdog chip code 5045 (through programming)

LED灯光变化控制，可以控制多个LED灯光的变化，实用可靠-LED lights change control, can control multiple LED lighting changes, practical and reliable

51事例原代码 很多很好用 51事例原代码 很多很好用-51 examples of the original code with a lot of very good examples of the original 51 code with a lot of very good

DS12CR887高精度万年历_C51程序-DS12CR887 high-precision calendar _C51 procedures

具有固定的“红灯―绿灯”转换间隔，并自动切换。它们一般由“通行与禁止时间控制显示、红黄绿三色信号灯和方向指示灯”三部分组成。在交通灯的通行与禁止时间控制显示中，通常要么东西、南北两方向各50秒；要么根据交通规律，东西方向60秒，南北方向40秒，时间控制都是固定的。交通灯的时间控制显示，以固定时间值预先“固化”在单片机中，每次只是以一定周期交替变化。-having fixed the "red light-green light" switch partitions, and automatic switching. They are generally from "prohibiting access and time control, red-yellow-green lights and direction indicator" is composed of three parts. Traffic lights in the passage of time and prohibit control indicates that things are usually either the north-south direction of the two 50 seconds; either on the basis of traffic laws, an east-west direction 60 seconds, 40 seconds north-south direction, the time control are fixed. Traffic lights to the time control, a pre-fixed time value "cured" in SCM, each is a certain cycle alternation.

51PS2,单片机+PS2-51PS2, microcontroller PS2

Atmel arm7有关USB应用的实例,可在IAR上面直接运行-Atmel arm7 Examples of applications on the USB can be run directly above in the IAR