This code may be reused for any educational or non

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

常用EEPROM芯片的读写操作，51单片机控制电路，实验时要用74LS373一片，AT28C16一片，AT28C17一片，电路十分简单，根据实际电路联接情况，自行确定存储地址，最后别忘了还要8个LED和470欧姆电阻.-EEPROM chip used to read and write operations, 51 MCU control circuit, experiment, use 74LS373 1, AT28C16 1, AT28C17 1, the circuit is very simple, based on the actual situation of the circuit connectivity, self-determined memory addresses, finally do not forget to also 8 LED and 470 ohm resistors.

用8155扩展51单片键盘控制-8155 with 51 single extended keyboard control

目的是让大家熟悉输入、输出端口的使用 该程序的功能是把演示板当做一个按键计数器-purpose is to let people familiar with the input, output ports using the procedures of the functional demonstration board is a key counter as

用递归的方法编写函数求Fibonacci级数的源程序-using recursive function method for the preparation of the source Fibonacci Series

基于msp430的程序-based on the procedures Controller

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

三相电机调速程序，集成了AD，系统初始化，结构化。可以作为电机控制的参考-three-phase motor procedures, the AD integration, system initialization, structured. As motor control reference

PT6523的程序,需要的朋友可以看一下-PT6523 procedures need friends can look at

简单的功能介绍：本软件是由，三块模块组成。一个是打字练习，一个是打字计时，一个是音乐练习。本软件解决了打字练习途中的估噪无味，提升练习效果。本游戏有4个等级,可以根据情况来选择。这个软件还改进了，判断你是否打字失败功能。如果，打字失败，还可以从来，亦可退出。打字计时，为你打字计时间，提高效率。同时，电子琴音乐，为你在无聊时，增添色彩，可以练习歌谱，提高兴趣。-Simple, functional description: This software is, three modules. 1 is a typing exercise, one is typing time, a music practice. The software solves the assessed noise typing practice tasteless way to improve practice effect. This game has four levels, you can choose depending on the circumstances. The software also improved, to determine whether you have failed typing feature. If, typing fails, you can never can quit. Typing time for your time typing dollars and improve efficiency. At the same time, organ music, for when you" re bored, add color, you can practice song sheet, interest.