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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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j_9698_sdxxhghgurl
1、栏目无限分类,自由添加,排序,前台显示 2、各大搜索和站内搜索随意切换 3、网站在线提交、后台审核、编辑、删除 3、站点相关信息后台动态配置 4、自助网站收录,后台审阅 5、网站广告在线发布后台登hh陆:admin/deep_login.asp 用户:admin 密码:admin(1, columns unlimited classification, the Liberal added, scheduling, showed two prospects, major search and random searches Station 3 switching, Site Online submission, background vetting, edit, delete three, site background information related to the allocation of four dynamic, self-help website recorded. 5 background scrutiny, for the advertisement posted online background Teng Lu hh : admin/deep_login.asp Users : admin Password : admin)
- 2007-02-02 09:21:14下载
- 积分:1
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verilog
介绍了一种SPI从机的接口verilog编码(verilog code for spi slave )
- 2012-07-19 21:08:21下载
- 积分:1
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Timer
定时器:设定时间格式(00::00)后,到时间弹出提示(timer:set time(00:00),then run up)
- 2013-12-07 08:46:19下载
- 积分:1
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accessOnlineTest
说明: 在线论文相似度以及重复率的非法抄袭的自动检测(Similarity and repetition rate online paper copy of the automatic detection of illegal)
- 2011-03-05 20:21:47下载
- 积分:1
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第00部分-Web技术历史
从数据挖掘的应用出发,以电力、航空、医疗、互联网、生产制造以及公共服务等行业...python数据分析与挖掘实战 源码 代码 配套资源 立即下载 上传者: ...(fsadasdassfafasfasdasdsafasfasdasdasdasfasdasdas)
- 2018-02-09 10:37:38下载
- 积分:1
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xycms
企业网站包括企业中心 新闻中心 产品展示 人才招聘 会员中心 在线留言等(Business center corporate website including News Products Jobs Member Feedback, etc.)
- 2011-06-22 14:07:50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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346573736
装修公司网站系统修正版源码,有需要的就下载吧。(Decoration company website system amended version of the source code, need to download it.)
- 2013-09-09 16:33:10下载
- 积分:1
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12
按键精灵 刷副本 口袋版 梦幻西游 蓝手指模拟器(QuickMacro brush copy of Pocket Edition Fantasy Westward blue finger simulator)
- 2014-02-21 12:48:02下载
- 积分:1