这是在51单片机上实现的完整功能的计算器源代码，用c写成，有利于帮助我们更好的学习单片机的开发...

C8051F340/1/2/3/4/5/6/7/8/9/A/B devices are fully integrated mixed-signal System-on-a-Chip MCUs designed specifically for USB applications.-C8051F340/1/2/3/4/5/6/7/8/9/A/B devices are fully integrated mixed-signal System-on-a-Chip MCUs designed specifically for USB applications.

本程序是一个简单的流水灯程序,对初学者来说是很容易掌握的,特别是对C51的初学者!--A simple water light program. It is easy to understand for beginners, especially who are learning C51.

鉴于MCS-51系统只提供“二级中断嵌套”，提出扩展51系统中断优先级的纯软件方法。其利用51系统内建的中断允许寄存器IE和中断优先级寄存器IP，通过屏蔽字机制来实现；以C51的形式，给出这种扩展方法的函数库实现，为该方法的使用赋予友好、简洁的用户接口。-Given MCS-51 systems only provide "two interrupt nesting," expanded 51 priority system interruption of pure software. The use of 51 built-in system allows interruption Register IE and priority interrupt register IP, through word shielding mechanisms to achieve; C51 in the form of this expansion is the way to achieve functions, methods for the use of empowerment friendly, simple user interface.

51单片机与12864LCD接口C源程序代码-51 Microcontroller Interface C source code with the 12864LCD

4442逻辑加密IC卡读写底层C51程序，-4442 encryption logic IC Card Reader bottom C51 procedures,

12864液晶在出厂时其对比度已经调好，所以用户在使用的时候第三管脚可不用接任何东西，本实验板上为了兼容多家12864液晶所以加了液晶对比度调节电位器，若用户使用我们配套的12864液晶可不用管它，液晶的第三管脚悬空就可以。有些液晶功耗比较大，用户在使用的时候可将液晶的第19、20引脚的背光不接，这样字体会很清楚-12864 LCD contrast, when the factory has a good tune, so when users can not access the third pin anything, this experiment in order to compatible with more than 12,864 on-board LCD so the addition of LCD contrast adjustment potentiometer, if users supporting our 12864 can not regardless of LCD, LCD" s third pin can be left vacant. Some relatively large power consumption of LCD, users can be used when the first 19,20 LCD backlight will not receive the pin, so that fonts will be very clear

VC下开发的串口调试工具，界面简单，方便操作，适用于PC机下与单片机通过串口通信-Developed under VC serial debugging tools, the interface simple, convenient operation, applicable to PC machines with single-chip through the serial communication

无线模块TC35I开发必用，详细的AT指令手册-Wireless module TC35I development will use a detailed instruction manual for AT

标准IIC协议通信程序，能读写EEROM、实时时钟，使用方便，可靠！-Standard IIC protocol communication procedures, can read and write EEROM, real-time clock and easy to use, reliable!

< AVR C语言的应用>>第九章中的例子 用ATmega1280 在IAR Embedded Workbench IDE平台编译连接通过的12个程序 -< > Example of the ninth chapter in the ATmega1280 with IAR Embedded Workbench IDE compiler platform to connect through the 12 procedures