新华龙020 的内置spi0。驱动16位精度dac8831的程序，采用单端方式输出正弦波...

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.

用51单片机控制温湿传感器dht11的程序 汇编语言编写-With 51 single-chip microcomputer to control the process temperature and humidity sensors dht11 the preparation of assembly language

这是一个LED液晶显示的程序...有多个接口..可以用的我用过-This is a LED LCD procedures ... .. a number of interface can be used with the I

89c52编写智能化开关电源设计，带A/D,D/A识别全数字开关电源程序。-89c52 prepare intelligent switching power supply design, with A/D, D/A to identify an all-digital switching power supply procedures.

430学习书籍,好东西,希望大家下载-430 learning books, good things, I hope everyone downloads

利用ＺＬＧ／ＳＤ软件包以及串口间件，数据队列软件包，构造一个ＳＤ／ＭＭＣ卡读卡器．-Use ZLG/SD software packages as well as the serial inter-pieces, data queue package, construction of a SD/MMC card reader.

总结前人经验,改进后的程序,虽有警告但是仍可应用.因为8个警告中有7个是因为函数定义后未调用.-Summary of previous experience, improved procedures, despite a warning but can still be applied. Because there are eight warning is because the seven did not call the function definition.

本方案适用于研究生、本科、大专、职业技术学院的嵌入式系统（单片机/ARM7） 应用、信息通信、应用电子、机电一体化、微机应用、数控技术、自动化控制、计 算机原理与应用、仪表及控制、汽车工程等与“电子/微机/总线”有紧密联系的相关 专业。-The program applies to postgraduate, undergraduate and post-secondary schools, vocational and technical colleges Embedded System (SCM/ARM7) applications, information communications, electronic, electromechanical integration, application of computer, NC technology, automatic control, computer science and application, Instrumentation and Control , automotive engineering, and "electronic/computer/bus" is closely linked to the relevant professional.

本程序是基于FM1702的射频卡读写器的单片机控制的C语言程序，所用单片机为AT89C52.-This procedure is based on the FM1702 RF card reader control of single-chip C-language program, using single-chip microcomputer for the AT89C52.

I0口作为串行口发送接收函数完美版-I0 mouth as send and receive serial port function perfect version