Proteus simulation example, in the Proteus simulation under the uart, very good,...

MCS-51系列单片机实例详解和案例代码，代码都是基于C语言-MCS-51 series single-chip Detailed examples and case code, the code are based on C language

51单片机编程范例（定时/计数器软件编程范例）-51 microcontroller programming paradigm (timer/counter software programming paradigm)

Proteus

单片机标准键盘PS2与单片机通信这是用C语言写 的哈-MCU standard keyboard PS2 and SCM communication is written in C language in Kazakhstan

8051的一些算法，浮点转换程序库，可以直接应用-algorithm, floating-point conversion, you can direct applications

profibus 的官方文件，朋友给的，朋友可是花钱买来的。-PROFIBUS_DP SPECIFICATION

一个红外接收的程序，对红外遥控的设计具有一定的参考价值-An infrared receiver of the procedures, the design of infrared remote control has a certain reference value for

我编写的基于spce061a的语音播报电子钟,利用sunplus开发板，可以设置时间和定闹 陈谭 2004 -I prepared based on the voice broadcast spce061a electronic bell, using sunplus development boards can set time and set downtown Chen Tan 2004

使用ICCAVR编写的AT24C16的读写函数，使用MEGA128L单片机，可以方便的移植到其他单片机上面。-ICCAVR prepared to use the read and write AT24C16 function, use MEGA128L microcontroller, can be easily ported to other single-chip microcomputer of the above.

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.