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PWM-ULN2003A
利用ULN2003A进行驱动，产生PWM波，里边有照片，可供参考，通过本例程了解PWM 的基本原理和使用 (#include <reg52.h>
unsigned char timer1
sbit PWM=P1^2
void system_Ini()
{
TMOD|= 0x11
//PWM
TH1 = 0xfe //11.0592
TL1 = 0x33
TR1 = 1
IE =0x8A
}
main()
{
system_Ini()
while(1)
{ if(timer1>100) timer1=0
if(timer1<30) PWM=0
else PWM=1
}
)
- 2013-11-21 15:17:25下载
- 积分：1
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jianpansaomiao
对矩阵键盘的程序编写，详细地讲述了如何扫描键盘的输入！(The matrix keyboard programming, detailed tells the story of how to scan the keyboard input!)
- 2013-09-29 09:29:23下载
- 积分：1
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CH911CI1
以8051为基础的有键盘；有液晶显示器；有传感器前置调理电路的数据采集器控制程序。(8051-based data acquisition control program)
- 2010-07-24 18:27:55下载
- 积分：1
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645-485
一个电表行业专用的基于645规约的电表485通讯抄表程序，可以进行485总线抄表，645规约测试。程序技术要点就是规约数据传输协议的处理，如向电表发送数据时的控制码和数据长度、发送的数据部分(数据标识 + 密码 + 数据)、应答帧长度、结束标志等通讯协议的处理值得大家学习。(A meter-based industry-specific statute 645 meter 485 meter-reading procedure can be carried out 485 meter, 645 Statute of the test. Procedures for the technical elements of the statute is to deal with data transmission protocols, such as sending data to the meter when the control code and data length, send the data section (data logo+ Password+ Data), response frame length, marks the end of the treatment protocol, etc. everyone deserves to learn.)
- 2021-03-08 09:49:29下载
- 积分：1
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Standard-CPP
美国编制C++教程，提高C++编程质量，有利于学习资料，对初学者和入门的都有很提高。(Improve the quality of C++ programming, in favor of learning materials for beginners and entry has very improved)
- 2014-01-13 16:35:32下载
- 积分：1
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bianyaqi
采用模糊聚类法，对变压器的故障诊断，并且分析各种气体含量。(The fuzzy clustering method, on the transformer fault diagnosis, and analysis of various gases.)
- 2010-05-17 21:09:53下载
- 积分：1
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code
包括很多的案列代码，博客系统，沟渠网站，售书系统等，使用。net(Including many text column code, blog systems, ditches website, bookselling system, to use. net)
- 2015-06-07 23:41:45下载
- 积分：1
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codejock-13.0.0-by-registred-by-sanlegas
codejock 13 and activasi
- 2014-01-07 13:21:51下载
- 积分：1
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Fish-tank-system
该项目首先是利用单片机对鱼缸的温度进行智能控制。首先通过外部按键对鱼缸所需温度进行设定。温度传感器 DS18B20 采集温度信息在外围的 LCD 上显示出来。其次是利用光电耦合器判断有无鱼饵，若无鱼饵，发出提示，若有鱼饵，则执行自动投食或手动投食功能。(The project first is the use of single-chip microcomputer to control the temperature of the fish tank. First, the temperature of the fish tank is set by the external button. The temperature sensor DS18B20 collects the temperature information to display on the periphery LCD. Followed by using photoelectric coupler to determine whether the bait, if there is no bait, alert, if there is a bait, automatic throw in and throw food or manually cast and functional food.)
- 2016-04-09 10:53:50下载
- 积分：1
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web
用asp语言实现从数据库中读取数据，并用折现图的形式表现出来。(Asp language used to read data from the database, and manifested in the form of discounted figure.)
- 2014-07-20 16:08:52下载
- 积分：1
