Calculator based on the realization of AD89S52 source.

其中的usb端口通信已经作为一个模块来使用，用户只需用以下函数就可以对usb端口进行方便地读写： unsigned char D12_WriteEndpoint(unsigned char endp, unsigned char len, unsigned char * buf) 此为usb端点输出函数，endp是要进行通信的端点，取值为3（普通端点，最大可一次传输16byte）或5（主端点，最大可一次传输64byte）；len为一次输出数据长度；*buf为数据所在位置。 usb端点数据的读操作是由底层函数自动完成的（相关函数为unsigned char D12_ReadEndpoint(unsigned char endp, unsigned char len, unsigned char * buf)； 相应端点为2和4），所读到的数据存于GenEpBuf[]（普通端点）、MainEpBuf[]或EpBuf[]（主端点）中，用户可以直接读取使用。-Usb port communication which has been used as a module, the user can use the following function on the usb port can easily read and write: unsigned char D12_WriteEndpoint (unsigned char endp, unsigned char len, unsigned char* buf) This is the endpoint usb output function, endp is to communicate the endpoint, the value for 3 (common endpoint, the first transmission maximum 16byte) or 5 ( the main endpoint, the first transmission maximum 64byte) len Length of output data for the first time * buf location for data. usb endpoint data is read

音乐C程序 是一首优美的音乐，可直接下载到51单片机里演揍。-Music C program is a beautiful music, can be directly downloaded to the MCU 51 years played beat.

单片机入门程序，对于开发自己的系统很有帮助。--Source codes for an infrared remote control. It is an entry-level program for SCM.

CAN 程序使用MCP2515 由STM32做主芯片控制-CAN program use MCP2515 the mater chip is STM32

MOXA 串口驱动编程-MOXA serial-driven programming

外国人开发的单片机网络资料，包含原理图，PCB图，调试程序，就是语言比较难懂，给大家看看作为参考吧-foreigners development of the single-chip microcomputer network information, including drawings, PCB plans, debugging procedures, Language is more difficult, for everyone to look at it as a reference

网线测试仪程序，可测试网线长度（300M内），排序，用脉冲反波测试，时间*速度=距离的原理。-Cable tester program to test cable length (300M) with sorting, using anti-wave test pulse, time* speed = distance principle.

51单片机控制TC35I无线通信模块的完整Keil C程序，还包含GB2312与Unicode转换，国标汉字、ASC字符显示，串口通信，液晶模块控制等程序。-51 single-chip wireless communication module TC35i control the integrity of Keil C procedures, also includes GB2312 and Unicode conversion, GB characters, ASC characters display, serial communications, LCD module control procedures.

方波产生程序 megal128 iccavr开发平台 -Square wave generation process development platform megal128 iccavr

x5045的相关程序，可以在keil c 上运行-X5045 procedures, you can run keil c