qixiang

说明：  stm32的ad9912的寄存器配置例程，频率，相位，功率的配置。(Stm32 ad9912 register configuration routine, frequency, phase, power configuration.)

NASA - [Aerospace History 16] - Touchdown, The Development of Propulsion Controlled Aircraft at NASA Dryden (pdf)

CAN数据通信测试软件，用于实现CAN总线通信数据的收发和分析(CAN data communication test software for CAN bus transceiver and communication data analysis)

8 基于义隆单片机开发的智能设备协议99SE电路图(8 Elan microcontroller development based on smart device protocol 99SE Circuit )

MC9S12XS128万能初始化函数，内含注释，方便参考学习。(MC9S12XS128 universal initialization function, containing notes, for ease of reference to learn.)

很好的HT1621程序.我调试过的,请放心使用啦(HT1621 good procedures. I have been debugging, please rest assured that the use of啦)

TCL5615锯齿波及播放声音测试，模块化清晰(TCL5615 sawtooth and play a sound test, modular clear)

定时器：设定时间格式（00：:00）后，到时间弹出提示(timer：set time(00:00),then run up)

名称：门禁模拟 模拟现实中门禁系统，可以输入密码进入也可以呼叫住户，再由住户按下开门按键 实现改密码功能，密码保存在24c02中能保证掉电不丢失密码。八个LED灯分别代表 8家住户，其中开门按键为共用，还带有忘记密码恢复按钮，模拟恢复出厂设置， 显示部分为LCD1602。程序共分为3种模式，分别为 等待输入 密码修改 呼叫住户 3种模式，其中等待输入是主要状态，所以在进入密码修改 呼叫住户模式后如果 长时间没有操作能自己切换到等待输入模式。(Name: Access Analog Simulating real access control system, you can also enter a password to enter the call households, again by pressing the open button households Implement change password function, the password stored in the 24c02 can guarantee non-volatile password. Eight LED lights represent 8 households, which opened the door keys are shared, but also with forgotten password recovery button, analog restore factory settings, Display part LCD1602. Program is divided into three modes, namely, waiting for a password to modify call households 3 modes, which is the main input wait state, so call households entering the password change mode if Their long time operation can be switched to the standby input mode.)

本例是用51单片机的键盘解码程序，亲试好用(This case is a keyboard with 51 decoding process, pro-test handy)