This is my own system of course a student, I hope we can exchange ideas, opinion...

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

串口调试助手源程序,对一些学语言编程的有些帮助！-serial debugging assistant source of some programming language learning some help!

这是一个汇编语言文件,利用8051进行串行通信的设计.-This is a compilation of language paper, using 8051 serial communication design.

汇编语言编程源代码- Assembly language programming source code

avr 秒节拍程序，采用汇编语言设计编写的通用软件延时子程序-avr seconds beats procedures, the use of assembly language designed to prepare the common software Delay Subroutine

本源代码是实际产品代码，百分之百产品代码，有任何疑问可以Q我-Source code is the actual product code, product code 100 percent, have any questions I can Q

时钟程序 简单的汇编语言-clock simple compilation of language

VC写的一个可以对ARM进行反汇编的工具的原代码-VC can write an anti-ARM tools to compile the original code

一个让人感觉高深莫测的3D debug code ，至少可以激发你的斗志。-people a feeling of inscrutable 3D debug code, you can at least stimulate the morale.