MCU matrix keyboard scanning process, has made a header file, very easy to use

开发环境ADS， 直流电机控制实验 掌握使用PWM方式控制直流电机的转动速度。-Development Environment ADS, DC motor control experiment to master the use of PWM control of DC motor rotation speed.

PCB钻孔资料 PCB设计重要参考资料-PCB borehole data important reference PCB Design

常用嵌入式IC的型号，各厂家的都有。-commonly used embedded IC models, the manufacturers have.

msp430实验DAC7611,对于初学者很有帮助-MSP430 experimental DAC7611, very helpful for beginners

在PC机上实现web方式控制单片机。大家有兴趣的可以共同交流这方面的东西。-In PC, the realization of single-chip web control. Interested Members can share the things in this regard.

This version of the code is compatible only with the AT89C2051 due to the location of the data buffer and stack in RAM. The code may be modified to work with the AT89C1051 by relocating or resizing the buffer and stack to fit into the smaller amount of RAM available in the AT89C1051.

实现公历与农历的转换一般采用查表法按日查表是速度最快的方法但51 单片机寻址能力有限不可能采用 按日查表的方法除按日查外我们可以通过按月查表和按年查表的方法再通过适当的计算来确定公历日所对应的 农历日期本文采用的是按年查表法最大限度地减少表格所占的程序空间-Limited can not be used In addition to a daily look-up table method of daily things that we can search through monthly and annual look-up table look-up table method and through the appropriate calculations to determine the calendar day corresponding to the Lunar date of this paper is the annual table look-up table method to minimize the space occupied by program

C51源代码，详细单片机C语言源码！包含大量C语言源程序。-C51 source code, detailed single-chip C language source code! Contains a large amount of C language source code.

初学单片机的一个实例运用，以at89c2051为例，用c语言编写的时钟程序。程序采用了两级中断，具有时钟及秒表功能。-beginners MCU use an example to at89c2051 example, the language used c clock procedures. Adoption of the two suspended, with the clock and stopwatch functions.

单片机测速 用测频的方法测速，用于简单的环境 已调试程序-MCU speed by the method of frequency measurement speed, for a simple debugger environment has been