4x4keyboardscan

ht1621驱动C语言版本,基本是一个通用的版本(ht1621 driver C language version of the basic version is a generic)

说明：  描述了AD9850、AD9851、AD9854、AD9833的调试心得(Describes the AD9850, AD9851, AD9854, AD9833 debugging experience)

C8051f500 Flash读写擦除操作(C8051f500 Flash read and write erase operation)

基于单片机MSP430的 步进电机控制 测距程序 (MSP430 microcontroller-based stepper motor control ranging program)

这是一个用51单片机系统仿真ucosii工作的protues电路 本系统包括扩展64k RAM的单片机系统和杨屹移植到51单片机的ucosii 系统 使用方法： 1.安装Protues7.4版，然后用protues打开protues 8051 simulation 文件夹 中的extern ram.DSN 文件 2.打开extern ram.DSN 后，双击单片机在弹出的窗口中的Program File 选项 中选择yy.hex文件。 (yy.hex其实就是yy文件夹中keil文档编译出来的hex文 件，yy文件夹是杨屹的ucos51 系统，用keil 2 可以打开) 3.在Clock Frequency选项中输入22.184M(杨屹的ucos51 用的是22.184M hz的单片机频率) 4.双击VTERM串口调试显示屏，在Baud Rate 选项中选择19200的波特率 5.保存，点击运行就可以看到经典的hello world 了。 (1. Protues7.4 version installed, and then open the protues folder protues 8051 simulation The extern ram.DSN file 2. Open extern ram.DSN, double-click the pop-up window of SCM in the Program File option, select yy.hex file. (yy.hex actually yy folder keil out of the document compiled hex files, yy folder is Yang Yi s ucos51 system, using keil 2 Can open) 3. In the Clock Frequency option to enter 22.184M (Yang Yi of the ucos51 using a microcontroller 22.184M hz frequency) 4. Double-click VTERM serial debug display, in the Baud Rate select 19200 baud rate options 5. Save, click Run you can see the classic hello world)

5-数码管动态扫描演示，能实现数码管自动的动态扫描，希望对各位有用处(5- digital dynamic scanning demonstration, to achieve a dynamic digital auto scan, you want to be useful)

说明：  单片机I/O口控制红外发射管，模拟格力空调遥控器的代码。典型应用：上位机发送一个通用的“开机，温度，模式……”命令，单片机自动发射出和遥控器一摸一样的波形，实现智能遥控器的功能。 (MCU I/O port control infrared emission control, analog Gree air conditioner remote control code. Typical applications: host computer to send a generic &quot boot, temperature, mode ... ...&quot command, microcontroller and the remote control automatically emit the same wave first touch, intelligent remote control functions.)

有关 C语言的CRC校验的资料，很实用，值得收藏和学习(About the C language, the CRC data, it is practical, it is worth collecting and learning)

数据转换为正弦图，最终输出的正弦图为平均正弦图。(Data into sine figure, final output sine the graph is the average sinogram.)

以定时的方式接收下位机传送的多帧数据，接收准确，实时性很强(In time to receive the next crew of the multi-frame data transmission, receive accurate, real-time strong)