SD卡资料大全，在网上找了好久的，供大家开发SD卡查询。

MSP430F1121与液晶驱动芯片PCF8576的连接程序-MSP430F1121 with the LCD driver chip PCF8576 connection procedures

mifare 读卡器weigant输出有kei uvision打开！-MIFARE reader weigant output is Kei uvision open!

编译为ICC AVR6.25A ATMEGA16L芯片 ad转换-Compiled for the ICC AVR6.25A ATMEGA16L chip ad conversion

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.

单片机C语言的精确延时程序设计，很有用的哦- The monolithic integrated circuit C language precise time delay programming, is very useful oh

在PIC上使用5个口线产生DTMF信号-use five lines I have DTMF signals

UCDOS16x16汉字字库的二进制字模文件-UCDOS16x16 汉字字库的???8 制字模文?

步进电机四轮驱动 -Stepper motor stepper motor four-wheel-drive four-wheel drive

独具一格，只用一个I/O资源就可测出常用的NEC格式IR 遥控码-a unique and use only one I/O resources can be used to measure the NEC format IR remote control code

用单片机对24c02进行读写操作。简单易懂。适合初学者使用。-With the 24c02 microcontroller for read and write operations. Easy to understand. Suitable for beginners.