C51 with HT9170 and HT9200 interface program (DTMF)

在软件proteus下仿真MCU-51单片机6位LED计数器的演示例子和完整源代码(keil工程)-in software simulation under MCU-51 6 LED counter demonstration examples and complete source code (c51 engineering)

8051单片机上4*4矩阵键盘的扫描方式2-none

具有固定的“红灯―绿灯”转换间隔，并自动切换。它们一般由“通行与禁止时间控制显示、红黄绿三色信号灯和方向指示灯”三部分组成。在交通灯的通行与禁止时间控制显示中，通常要么东西、南北两方向各50秒；要么根据交通规律，东西方向60秒，南北方向40秒，时间控制都是固定的。交通灯的时间控制显示，以固定时间值预先“固化”在单片机中，每次只是以一定周期交替变化。-having fixed the "red light-green light" switch partitions, and automatic switching. They are generally from "prohibiting access and time control, red-yellow-green lights and direction indicator" is composed of three parts. Traffic lights in the passage of time and prohibit control indicates that things are usually either the north-south direction of the two 50 seconds; either on the basis of traffic laws, an east-west direction 60 seconds, 40 seconds north-south direction, the time control are fixed. Traffic lights to the time control, a pre-fixed time value "cured" in SCM, each is a certain cycle alternation.

是一款不错的单片机开发软件说明,开发单片机前的必备知识学习。-Is a good description of single-chip microcomputer software, the development of single-chip pre-requisite knowledge.

S3C2442的起动代码程序等。有较大的实用价值-S3C2442 starting code procedures. Have a greater practical value

使用键盘上的上、下、左、右四个按键，可以分别控制led1,2,3,4, 每个LED 对应的Port 请参考“实验平台介绍”说明文档。要求按下 上面提到的四个按键中间的一个按键后，该按键对应的led 被点亮，持续1 秒钟以后led 熄 灭。-Use the keyboard on the upper and lower, left, and right buttons, can control led1, 2,3,4, each LED corresponding to the Port, please refer to " experiment on" documentation. Requirements of the four above-mentioned press the middle button of a button, the button that corresponds to being light led, continuous 1 second later led out.

at2051中实现AD转换的源代码！也算是一个实例程序。-at2051 realizes the source code which AD transforms! Also is an example procedure.

51单片机的KEIL操作函数库，这个资料看完了，那么KEIL开发51的使用也差不多了。-51 SCM KEIL operation library, read this information, then use the KEIL development of 51 should be enough.

基于ATMEGA88进行的蜂鸣器驱动的编程-Carried out based on ATMEGA88 buzzer-driven programming

mega8数码管电子钟程序，用32768晶振，很准确。-mega8 electronic clock.