PIC单片机4*4键盘扫描C语言程序

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.

CAN 驱动编程-CAN-driven programming

单片机的Demo，可以在单片机上演奏音乐 用汇编语言的写的

51单片机多功能原程序KASHDADSKNFILSDHSCMSKMNKJH-ATMER S51

有关LCD驱动的一些代码，与大家分享-On the LCD-driven some code to share with you

汉字字库的点阵提取程序,可以转成h格式与0x格式-Chinese characters of the dot-matrix extraction procedures, can be transformed to the format with the 0x format h

一个单片机控制的SIMCOM的C语言处理程序-a microcomputer control SIMCON the C language processing

锁定键盘的程序,程序中设定了密码正确标志,在编译软件中编译成功.-keyboard lock procedures, procedures set password correct signs, the compiler software compiler success.

MODBUS通信协议MODBUS源代码最初是MODICON为自己生产的PLC（可编程逻辑控制器）协议而开发的，后来广泛应用于工业部门，这是一对多的通信方式，他的方式是免费开放的，任何人都可以开发，这么多的PLC，人机界面和控制软件有支持方案。

51板的常用程序，包括红外、12864、1602、AD、DA、18B20等-51 plates commonly used procedures, including infrared, 12864,1602, AD, DA, 18B20, etc.