This is a microcontroller programming on the books, and I hope to you like SCM s...

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.

通过单片机对HT9200进行控制访问，实现电话的DTMF拨号功能-Through the single-chip microcomputer to control HT9200 visit realize phone DTMF dialing

用普单片机实现低成本高精度A_D与D_A转换关键词 单片机 　A/D转换 　D/A转换 　PWM(脉冲宽度调制)比较器-Pu realize low-cost single-chip microcomputer with high-precision conversion A_D with D_A Key words Single-chip A/D converter D/A converter PWM (pulse width modulation) comparator

基于usb开发板的hid键盘,使用者可根据此代码编写自己的HID设备-development board based on usb hid the keyboard, users can be prepared according to this code of HID equipment

采用实时芯片DS1302来计时,并用LCM液晶显示!有较高的精确度!-Real-time chip DS1302 to time, and LCD LCM! Have higher accuracy!

Keil-C51-V8.08安装程序使你的8051工程和开发过程变得简单-Keil-C51-V8.08 installation process so that your 8051 works and the development process becomes simple

单片机IO口模拟UART演示程序，使用74HC164串行显示数据-Single-chip analog IO port UART demo program, the use of 74HC164 serial display data

Motorola公司单片机MC68HC908实现KBI功能的实例程序,C语言在Code Warrier集成环境中编写。-Motorola MCU MC68HC908 companies achieve functional examples of KBI procedures, C language in the Code Warrier prepared integrated environment.

DMA例程，51单片机读写DMA的C语言程序和汇编程序-DMA routines, 51 single-chip DMA read and write C-language programming and assembler

USB转lpt 68013 驱动方案 USB转lpt 68013 驱动方案-Lpt 68013 Driver USB to USB transfer program lpt 68013 driver program