研究所积累的资料2,大家秘密使用,千万别告诉别人!

采用反正法扫描方法对4X4矩阵式按键进行扫描，判断是哪个按键按下。-Scanning method used in any case law on the 4X4 keypad matrix scan to determine which keys are pressed.

功能强大的时钟中断，单片机和FIFO的接口和操作，单片机串口编程问题，纯软件单片机串口，串口通信的单片机程序，程序的多任务和资源复用举例，采用软件定时的计算方法-powerful clock interruption, the 8031 and FIFO interface and operation, the 8031 serial programming, software-only MCU, the MCU serial communication procedures, the procedures for multi-task and resource reuse, for example, regularly use the software method of calculation

51单片机基础训练项目之会唱歌的单片机。本例使用普通有源蜂鸣器，通过控制单片机输出频率来达到“唱歌”的目的。着重训练初学者对IO管脚的认识。-51 MCU-based training program in the microcontroller will be singing. In this case the use of ordinary active buzzer, by controlling the microcontroller output frequency to achieve the " singing" objective. Focus on training for beginners to the IO pin awareness.

美国TI公司的protel 元器件库，在应用中需要更新，本人收集了最新的版本共30M，为提高上传速度分六次上传。文件名依次为TI_1到TI_6。希望大家设计电路板时少走弯路这里是TI_3-TI" s U.S. Treasury protel components, need to be updated in the application, I collected a total of up-to-date version of 30M, to improve the upload speed upload six hours. File name followed by TI_1 to TI_6. Hope that the design of circuit board is less detours here TI_3

W78e58读写iButton的源程序，应用于电子门锁的完整程序-W78e58 iButton read and write the source code used in electronic locks integrity procedures

51单片机_RTOS方式控制GSM模块TC35I源程序. 希望对大家有用。-_RTOS Control of 51 single-chip GSM module TC35i source. Hope useful for everyone.

51单片机收发短信的程序，W77e58单片机外括16kram就行-51 SCM SMS procedures, including W77e58 SCM 16kram on foreign firms

利用51系列单片机实现四种波形，正弦波、方拨、阶梯波、三角波，采用开关电路实现四种波形转换、放大电路实现波形幅度可调。通过编程实现仿真。-51 Series MCU realize the use of four types of waveforms, sine, square dial, ladder wave, triangle wave, the use of switching circuits to achieve the four waveform conversion, amplifier circuit realize adjustable waveform amplitude. Through the realization of simulation programming.

数字电子钟程序，计时时、分、秒，手动调整时间，闹铃，和整点报时-digital electronic clock procedures, a time when, minutes, and seconds, manual adjustments, Alarms, and the whole point is true.

c8051f020的128×64图形液晶显示图形的程序，图形液晶的型号为lm3033a-C8051f020 128 64 graphics LCD graphical procedures, graphic LCD models for lm3033a