Train-ticket-booking-system

stm32f407使用OV2640摄像头进行拍照存储到sd卡中(stm32f407 using OV2640 camera to take pictures sd memory card)

红外的收发测试。。通过2路红外发射，顺序接收，检测收发功能是否正常(Infrared transceiver test. . 2-way infrared transmitter, received out of sequence detection transceiver function is normal)

两路电压表，0809可以实现两路的模数转换(Two way voltmeter )

1.可以自动生成十六进制字编码。 2.可以自动C语言格式字符编码。 3.支持GBK和ASCII字符编码查询。(1 can automatically generate a hexadecimal character encoding. 2 can automatically format the C language character encoding. 3 support GBK and ASCII character encoding query.撤消修改)

PS2通信，用stm32单片机模拟键盘鼠标往电脑送数据。(PS2 communication with stm32 SCM simulation to send data to a computer keyboard and mouse.)

带参数存储的整点报时音乐电脑时钟，算是一个比较适合初学者一个小系统。有一定的参考价值。(With parameters stored in the computer clock chime music, be a more suitable for beginners a small system. Have a certain reference value.)

可实验0.5KHZ到10KHZ的简单测频,并由数码管显示出来!(Experimental 0.5KHZ can be simple to 10KHz frequency measurement by digital tube display!)

汽车遥控钥匙RKE开发：pcf7961相关资料及代码，包括库应用文件、HITAG-3协议说明及软件架构等PDF资料。(RKE development.Remote Keyless pcf7961 relevant information and code, including database application files, HITAG-3 protocol description and software architecture PDF files.)

不错的拓普微3.5寸LCD显示屏驱动代码，可以参考(Good TOPWAY 3.5-inch LCD display driver code, you can refer to it)

宽频放大器,有以下功能: 预置增益,增益加/减,显示输出电压有效值,自动增益 显示有效值. 增益输入及加减 自动增益没有实现(Wideband amplifier has the following functions: Preset gain, gain plus/minus, the display output voltage RMS, automatic gain display rms. AGC gain input and subtraction is not implemented)