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跑马灯代码(led跑马灯,每行代码的含义是什么)

编程之家2023-11-04124次浏览

大家好,今天小编来为大家解答跑马灯代码这个问题,led跑马灯,每行代码的含义是什么很多人还不知道,现在让我们一起来看看吧!

跑马灯代码(led跑马灯,每行代码的含义是什么)

led跑马灯,每行代码的含义是什么

ORG

0000H

;开机上电主程序入口

AJMP

START

;系统一进来就转到主程序

跑马灯代码(led跑马灯,每行代码的含义是什么)

ORG

0030H

;主程序地址

START:

MOV

A,

跑马灯代码(led跑马灯,每行代码的含义是什么)

#0FFH

;主程序开始,A中初始化成全1

CLR

C

;c清零

MOV

R2,

#08H

;R2左转循环计数器

LOOP:

RLC

A

<<C+A+C<<带进位循环左移,A中的内容在8此循环中从0位到7位依次变0

MOV

P2,

A

;送到P2,使P2从0位到7位依次点亮LED

CALL

DELAY

;单片机运行很快,为了能看到灯的变化,必须延迟,把速度降下来

DJNZ

R2,

LOOP

;R2每次减1后判断是否=0,8次后=0程序才会下行,否则会跳回LOOP

MOV

R2,#07H

;R2右转循环计数器

LOOP1:

RRC

A

>>C+A+C>>带进位循环右移,A中的内容在8此循环中从7位到0位依次变0

MOV

P2,

A

;送到P2,使P2从7位到0位依次点亮LED

CALL

DELAY

;和上个循环一样,延时

DJNZ

R2,

LOOP1

;R2每次减1后判断是否=0,7次后=0程序才会下行,否则会跳回LOOP1

JMP

START

;跳回程序起始位置重复下一个循环

DELAY:

MOV

R3,

#20;延时子程序,这个应该不用解释了吧

D1:

MOV

R4,

#200

D2:

MOV

R5,

#248

DJNZ

R5,

$

DJNZ

R4,

D2

RET

END

急需一个连续不间断的跑马灯的代码

<script language="JavaScript">

var msg="跑马灯效果";

var speed= 300;

var msgud=""+ msg;

function titleScroll(){

if(msgud.length<msg.length) msgud+="-"+ msg;

msgud= msgud.substring(1, msgud.length);

document.title= msgud.substring(0, msg.length);

window.setTimeout("titleScroll()", speed);

}

</script>在使用的<body>中加入 onload='window.setTimeout("titleScroll()",500)'再加一段实现横向跑马灯效果的js代码:<html>

<body>

<div id=demon style="OVERFLOW: hidden; WIDTH: 1008px; HEIGHT: 167px">

<div id=demon1>

<table cellspacing=0 cellpadding=0 width=1008 border=0>

<tbody>

<tr>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img34original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img35original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img36original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img295original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img62original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img63original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img64original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img202original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img203original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img204original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img205original.jpg" width=167 border=0></a>

</td>

<td>

<a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="" target=_blank><img height=50 alt=""

src="images/img206original.jpg" width=167 border=0></a>

</td>

<td id=demon2></td>

</tr>

</tbody>

</table>

</div>

</div>

</body>

<SCRIPT>

var speed1=1

demon2.innerHTML=demon1.innerHTML

function Marquee1(){

if(demon2.offsetWidth-demon.scrollLeft<=0)

demon.scrollLeft-=demon1.offsetWidth

else{

demon.scrollLeft++

}

}

var MyMar1=setInterval(Marquee1,speed1)

demon.onmouseover=function(){clearInterval(MyMar1)}

demon.onmouseout=function(){MyMar1=setInterval(Marquee1,speed1)}

</SCRIPT>

</html>再加一个实现纵向图片跑马灯效果的js代码:<div id=demon

style="OVERFLOW: hidden; WIDTH: 190px; HEIGHT: 575px">

<div id=demon1>

<table cellspacing=0 cellpadding=0 width=167 border=0>

<tbody>

<tr>

<td><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href=""

target=_blank><img height=50 alt=""

src="images/img34original.jpg" width=167

border=0></a></td>

</tr>

<tr>

<td height=5></td>

</tr>

<tr>

<td><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href=""

target=_blank><img height=50 alt=""

src="images/img35original.jpg" width=167

border=0></a></td>

</tr>

<tr>

<td height=5></td>

</tr>

<tr>

<td><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href=""

target=_blank><img height=50 alt=""

src="images/img36original.jpg" width=167

border=0></a></td>

</tr>

<tr>

<td height=5></td>

</tr>

<tr>

<td><a rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" href=""

target=_blank><img height=50 alt=""

src="images/img295original.jpg" width=167

border=0></a></td>

</tr>

<tr>

<td height=5></td>

</tr>

其中的图片路径随具体情况改变, speed1代表滚动速度,越小越快!对于图片的宽度或高度,要跟div样式的宽或高搭配得当才能实现无限滚动!

跑马灯HTML源代码

1、<marquee>...</marquee>普通卷动

2、<marquee behavior=slide>...</marquee>滑动

3、<marquee behavior=scroll>...</marquee>预设卷动

4、<marquee behavior=alternate>...</marquee>来回卷动

5、<marquee direction=down>...</marquee>向下卷动

6、<marquee direction=up>...</marquee>向上卷动

7、<marquee direction=right></marquee>向右卷动

8、<marquee direction=’left’></marquee>向左卷动

9、<marquee loop=2>...</marquee>卷动次数

10、<marquee width=180>...</marquee>设定宽度

11、<marquee height=30>...</marquee>设定高度

12、<marquee bgcolor=FF0000>...</marquee>设定背景颜色

13、<marquee scrollamount=30>...</marquee>设定滚动速度

14、<marquee scrolldelay=300>...</marquee>设定卷动时间

15、<marquee onmouseover="this.stop()">...</marquee>鼠标经过上面时停止滚动

16、<marquee onmouseover="this.start()">...</marquee>鼠标离开时开始滚动

在网页中除了可显示常见的美国信息交换标准代码(外语缩写:ASCII)字符和汉字外,HTML还有许多特殊字符,它们一起构成了HTML字符集。

有2种情况需要使用特殊字符,一是网页中有其特殊意义的字符,二是键盘上没有的字符。

HTML字符可以用一些代码来表示,代码可以有2种表示方式。即字符代码(命名实体)和数字代码(编号实体)。

字符代码以“&”符开始,以分号";"结束,其间是字符名,如&reg;。数字代码也以“&#”符开始,以分号";"结束,其间是编号,如®。

扩展资料

网站源码作为软件的特殊部分,可能被包含在一个或多个文件中。一个程序不必用同一种格式的源代码书写。例如,一个程序如果有C语言库的支持,那么就可以用C语言;而另一部分为了达到比较高的运行效率,则可以用汇编语言编写。

较为复杂的软件,一般需要数十种甚至上百种的源代码的参与。为了降低这种复杂度,必须引入一种可以描述各个源代码之间联系,并且如何正确编译的系统。在这样的背景下,修订控制系统(RCS)诞生了,并成为研发者对代码修订的必备工具之一。

还有另外一种组合:源代码的编写和编译分别在不同的平台上实现,专业术语叫做软件移植。

参考资料来源:百度百科-源码

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