ATMEL at89c51snd1 do mp3 source code

用汇编语言编写的基于单片机的温度测控程序，对温度变化进行监控，附带了电路图。-Using assembly language to prepare single-chip microcomputer-based temperature monitoring and control procedures to monitor temperature changes, with the circuit diagram.

此程序为自行车计附带产品．可以计里程，计速度．清零等功能．采用霍尔传感器传输信号，单片机采用中断扫描．然后用数组的形式在LED上显示．-procedure for bicycles or spin-off products. Total mileage can be up speed. Reset function. Hall sensor used for signal transmission interrupt SCM scan. Then in the form of an array of LED show.

双机无线通讯单片机程序 LED护栏管无线模块485通讯 -Two-plane wireless communications microcontroller program LED fence tube radio communication module 485

蜂鸣器911报警(汇编),单片机的定时器根据声音的频率来设计-Alarm buzzer 911 (compilation), single-chip timer in accordance with the frequency of the sound design

SD卡的简单介绍，包括SD卡的分类，协议，脚位定义等。-SD card, a brief introduction, including the SD card classification, protocol, pin definitions.

单片机与电脑通讯，简单的max232代码。-SCM and computer communication, a simple MAX232 code.

仪器仪表键盘显示模拟系统，用AT89S52芯片作为系统的CPU，控制系统的按键及显示器部分。用8路同相三态双向总线收发器74LS245芯片驱动LED。4X4矩阵键盘作为系统人机交互的重要部分，用于向单片机应用系统输入数据或控制信息，设计4X4矩阵键盘分别对应键码“0-F”。系统可以实现的基本功能包括开机LCD液晶屏幕显示“大专05电子信息X班XXX毕业设计”信息；按下任意一个按键，LCD液晶屏幕显示相应按键的信息。在基本功能的基础上还增加了一个扩展功能，即增加一个LED数码管同步显示相应键码-Show the simulated keyboard instrumentation systems, using AT89S52 chip as a system CPU, system control buttons and display parts. With 8-phase three-state bidirectional bus transceiver 74LS245 chip-driven LED. 4X4 matrix keyboard system as an important part of human-computer interaction, single-chip microcomputer application system used to input data or control information, the design of 4X4 matrix keyboard key code corresponding to

基于LIN的收发通信 适合试验试验 调试运行通过放心下载-Based on the LIN transceiver communications for the pilot test run debug through assured Download

通讯规则: 1:时钟7.3728 MHz/波特率9600/9个数据位/奇校验/1个停止位/硬件多机通讯功能/ 2:通讯连接采用硬件MAX485,双向单工 3:每个上行/下行的数据包的字节个数都是一样的(通讯数据量) 4:每个上行/下行的数据包都采用CRC8校验 5:数据接收采用中断+查询的方式 6:总是由主机向从机发送一个数据包,从机收到数据包后向主机回复一个数据包 7:不管是主机还是从机,如果收到的数据包有任何错误,都将丢弃该数据包,等效于没有接收 8:从机之间不能相互通讯,必须通过主机才能交换数据 9:无效地址是0,主机地址是1,从机地址是2.3.4......广播地址是255 -err

液晶1602C51程序，P1口做数据线P2口做控制线-LCD 1602C51 procedures, I do data P1 P2 line control line so I