在单片机应用设计中，4*4键盘是经常用到的，在这个程序种，提供了驱动键盘的基本函数，用户可以直接调用，可以很容易的移植到你的系统上。程序中并附带了，lcd160...

1.电子琴功能 用实验板上K1~K7作为电子琴的7个按键，每个按键对应一个音符要求当按下其中一个按键，就通过P2.5口输出对应频率信号使蜂鸣器发出特定音符声音。 2.乐曲演奏 若按下K8键，完成自动弹奏“送别”歌曲。 -1. Organ function of the experimental board K1 ~ K7 as the organ of the seven buttons, each button corresponds to a note of which require that when the press of a button, on the adoption of P2.5 port output frequency signal corresponding to a specific note to the buzzer sounds . 2. Music playing, if pressed K8 button to complete the auto-play " Farewell" songs.

usb to 232 学习作下在线的资料-usb to 232 to learn to make the next line of information

单片机实现直流数控稳压电源,可调电压为0-9.9伏,步进为0.1伏,可以自动扫描键盘以增加或者减少电压-MCU NC Regulators DC power supply with adjustable voltage of 0-9.9 volts, stepping to 0.1 volts, can automatically scan the keyboard to increase or reduce the voltage

上海复旦微电子感应IC卡读写芯片FM1702SL读写程序-Shanghai Fudan Microelectronics sensor IC chip card reader to read and write procedures FM1702SL

键盘+密码锁的设计,单片机初学者必须掌握程序,适用于proteus-Keyboard+ password lock design, microcontroller for beginners to grasp the procedures applicable to proteus

移动机器人摇杆手柄调速中(AD采集)，微控制器为MSP430，已成功调试用于机器人上！-Mobile Robot Control in the rocker lever (AD Acquisition), micro-controller for the MSP430, debugging has been successfully used on the robot!

一个开发51的编程器软件，原版为聂志强所写，但不能编译，缺少一些文件，我加上了，修改了，能够工作了-development of a software program, for Zhixin, Nie Zhiqiang, the original written, but not compile, the lack of some documents, I add the changes to the work

用单片机产生Pwm来控制电机的硬件和软件设计，欢迎下载！-MCU Pwm to produce motor control hardware and software design, welcome to download!

对I2C总线的EEPROM芯片AT24C08进行读和写的操作，并判断读写是否一致。-EEPROM on the I2C bus to read and write AT24C08 chip operation, and determine whether to read and write.

72段LCD驱动器SD0418的测试程序-72 LCD drive SD0418 test procedures