DS1302 是 DALLAS （达拉斯）公司推出的涓流充电时钟芯片 内含有一个实时时钟/日历和 31 字节静态 RAM 通过简单的串行接口与单片机进行通信，实时时钟/日历电路提供秒、分、时、日、日期、月、年的信息，每月的天数和闰年的天数可自动调整 时钟操作可通过 AM/PM 指示决定采用 24 或 12 小时格式 DS1302 与单片机之间能简单地采用同步串行的方式进行通信 仅需用到三个口线 1 RES 复位 2 I/O 数据线 3 SCLK串行时钟 时钟/RAM 的读/写数据以一个字节或多达 31 个字节的字符组方式通信 DS1302 工作时功耗很低保持数据和时钟信息时功率小于 1mW
DS1302 is a trickle charging clock chip introduced by Dallas (Dallas), which contains a real-time clock / calendar and 31 bytes of static RAM. It communicates with MCU through a simple serial interface. The real-time clock / calendar circuit provides information of seconds, minutes, hours, days, dates, months and years. The number of days per month and the number of days in leap years can be adjusted automatically. The clock operation can be realized through AM / PM It is indicated that the communication between DS1302 in 24 or 12 hour format and single chip microcomputer can be realized simply by synchronous serial mode. Only three interface lines 1 res reset 2 I / O data line 3 SCLK serial clock / RAM read / write data are needed to communicate DS1302 in a byte or up to 31 byte character group mode Low power consumption in operation, less than 1MW in data and clock information (2020-06-20, C/C++, 494KB, 下载0次)
整个音乐播放器系统主要由微控制器、音频解码和处理部分、SD卡部分、人机交互部分、电源部分组成，整个系统由MCU控制，各个部分协调运作。上电开机后，即为音乐播放器界面，播放音乐，LCD彩屏上显示相关音乐播放器信息，同时我们可以通过按上、下曲按键来切换上一曲和下一曲，通过音量加、减键来控制音量大小。
The whole music player system is mainly composed of microcontroller, audio decoding and processing part, SD card part, human-computer interaction part and power supply part. The whole system is controlled by MCU, and each part coordinates operation. After power-on, it will play music for the interface of the music player, and display relevant music player information on the LCD color screen. At the same time, we can switch the previous song and the next song by pressing up and down keys, and control the volume by adding and subtracting the volume keys. (2019-03-01, C/C++, 1236KB, 下载0次)
MMA8451三轴加速度计 STM32F103c8t6单片机控制程序，可以设置加速度计量程，±2g、±4g、±8g，但是程序里2g和4g模式下精度很高很准确，8g模式下采集到的数据存在问题，通过串口打印输出，显示单位是g。程序内关键部分已添加注释，希望可以帮到大家。
MMA8451 three axis accelerometer STM32F103c8t6 microcontroller control program, can set the accelerometer range, + 2G, + 4G, + 8g, but the accuracy of 2G and 4G in the program is very high and accurate, the data collected under 8g mode has problems, print output through serial port, display unit is g. The key part of the program has been annotated, hoping to help you. (2018-04-13, C/C++, 7381KB, 下载9次)
这个是基于CC2430的ADXL345加数度传感器的应用（基于IAR）,是通过加速度的变化远程控制终端节点的灯闪情况，是无线嵌入式开发的非常好的演示程序，是嵌入式即物联网相关的开发应用，对ZIGBEE研究人员有极好的指导作用，程序已经实验通过，保证质量。
The ADXL345 is based on the CC2430 application (based on IAR), is a very good wireless embedded development demonstration program is embedded that things related to the development and application of ZIGBEE researchers have an excellent guide, experimental procedures have been adopted to ensure quality. (2011-11-30, C/C++, 49KB, 下载127次)
介绍了基于单片机用PWM实现直流电机调整的基本方法，直流电机调速的相关知识，及
PWM调整的基本原理和实现方法。重点介绍了基于MCS一51单片机的用软件产生PWM信号的途径，并
介绍了一种独特的通过采用计数法加软件延时法实现PWM信号占空比调节的方法。对于直流电机速度控
制系统的实现提供了一种有效的途径。
Introduced based microcontroller PWM DC motor adjusted to achieve the basic method, knowledge of DC motor speed control, and PWM to adjust the basic principles and implementation methods. Highlights based on MCS-51 microcontroller with a PWM signal generated by the software approach, and describes a unique software through the use count plus time delay method of the PWM signal duty cycle adjustment method. DC motor speed control system for the realization of an effective way. (2011-11-14, C/C++, 116KB, 下载8次)
PIC16887A单片机一个双机通信，2个单片机异步串行通信接口相连方式为：RX和TX交叉对接，左边的单片机U1，每按下按键S1就发送一个字节数，从0x20开始发送，每送一个数据，此数加1.发送的同时在D口上输出。右边单片机U2为接收状态，采用中断方式，如有接收中断，则进入中断，将接收到的数直接在D口上输出
PIC16887A a two-machine communications microcontroller, two asynchronous serial communication interface connected to Microcontroller way: RX and TX cross-docking, the left side of the microcontroller U1, S1 each key is pressed to send a number of bytes, starting from 0x20 to send, each send a data, this number plus 1. send the output port D at the same time. Right of the microcontroller U2 to receive state, the use of interrupt and, if receive interrupt, the interrupt will be received directly on the number of output port D (2011-06-04, C/C++, 32KB, 下载7次)