assembly language LED matrix operation

单片机与104键PS2接口标准键盘程序，用C语言编写。-SCM and 104 key PS2 keyboard interface standard procedures, using C language.

dmi读取工具，能够读type0-4的所有信息，兼容版本2.0-2.4-dmi reading tool, Reading type0-4 all the information compatible versions 2.0-2.4

一个汇编语言学习的代码,包括学习,研究-a compilation of the code language learning, including learning, research

递归下降分析法让我们更加的能够懂得和了解词法分析的内容和注解。-Recursive descent analysis so that we can know and understand more of the lexical analysis of the content and annotations.

交通灯代码, Y22）车道黄灯 　　Y20车道红灯 　　Y23车道绿灯 -traffic lights code, Y22) Y20 lane carriageway yellow light green lane Y23

运用汇编实现简易的4位加减乘除计算器，通过硬件课程实践，证明代码的有效性，并且，在确认键值的方法上有更新的方法，值得参考借鉴。

特此感谢Redfox的源程序，游戏中的地图数据和角色移动的核心代码基本保持原版，对这部分内容仅作了格式上的调整。 目前只能算是入门级水平，如果游戏中有任何逻辑错误，请大家自行对源代码修改（源代码是:版权没有，翻版不纠！ 但请大家尊重Redfor的源码，如要转载，请与原作者联系）-Redfox hereby like to thank the source, in-game map data and the role of mobile code essential to maintain the core of the original, this part of the contents were only format adjustments. The current level can only be regarded as entry-level, if the game has no logic error, please everyone to modify the source code (source code is: there is no copyright infringement is not correct! But please respect everyone Redfor source, such as the need to reprint, please contact contact the original author)

0到99秒的计时,误差极小,不同一般的DELAY哦.-0-99 seconds of the time, the error is very small and different from other DELAY oh.

汇编逻辑尺的应用！-compilation of the application logic feet!

用89C51，外接晶振，复位电路，二个数码管，二个按键，做一个电子秒表，具体要求为用按键起停电子表，可用按键设计倒计时时间(如10S，20S，60S),并启动倒计时功能,能用按键选择以上两功能之一-With 89C51, an external crystal oscillator, reset circuit, two digital tube, two buttons, making an electronic stopwatch, and specific requirements for the use button start-stop electronic watches, key design can be used countdown time (such as 10S, 20S, 60S), and start the countdown function, can be used for more than two buttons select one of the functions