基础知识：51单片机编程基础.mht

单片机教程的重要部分,你们可以好好看看

.box_1 UL {
	PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5px; =
PADDING-TOP: 5px
}
.box .center_box LI {
	FONT-SIZE: 14px; LINE-HEIGHT: 25px
}
.box .center_box LI SPAN {
	FONT-SIZE: 12px; FLOAT: right; COLOR: #a8a8a8
}
.box .down_box LI {
	FONT-SIZE: 12px; LINE-HEIGHT: 25px
}
.box .down_box LI SPAN {
	PADDING-RIGHT: 5px; PADDING-LEFT: 5px
}
.box .down_box LI SPAN A {
	COLOR: #275c91
}
.box_bt {
	PADDING-RIGHT: 4px; PADDING-LEFT: 24px; FONT-WEIGHT: bold; FONT-SIZE: =
14px; BACKGROUND: url(title_icon.gif) #f6f6f6 no-repeat 10px 12px; =
PADDING-BOTTOM: 4px; MARGIN: 5px 7px 4px; COLOR: #275c91; PADDING-TOP: =
4px
}
.box_bt A:link {
	COLOR: #275c91
}
.box_bt A:visited {
	COLOR: #275c91
}
.box_bt A:hover {
	COLOR: #275c91; TEXT-DECORATION: underline
}
.box_text {
	BACKGROUND: url(title_bg.gif) repeat-x 50% bottom; PADDING-BOTTOM: 6px; =
MARGIN: 0px 7px; COLOR: #8c8c8c; TEXT-INDENT: 24px; LINE-HEIGHT: 21px
}
.box_title {
	BACKGROUND: url(news_bg.gif); POSITION: relative; HEIGHT: 28px
}
.box_title H3 {
	PADDING-RIGHT: 10px; PADDING-LEFT: 10px; FONT-WEIGHT: bold; FONT-SIZE: =
120%; PADDING-BOTTOM: 0px; MARGIN: 1px 1px 0px; COLOR: #275c91; =
LINE-HEIGHT: 26px; PADDING-TOP: 0px; HEIGHT: 26px
}
.box_title SPAN {
	PADDING-RIGHT: 5px; FLOAT: right; PADDING-TOP: 5px
}
.box .left_box LI {
	LINE-HEIGHT: 24px
}
.box .hot_box LI {
	PADDING-LEFT: 14px; BACKGROUND: url(nav_icon.gif) no-repeat 5px 10px; =
LINE-HEIGHT: 27px
}
.box .hot_box LI A:link {
	COLOR: #2c6aa9
}
.box .hot_box LI A:visited {
	COLOR: #2c6aa9
}
.box .hot_box LI A:hover {
	COLOR: #2c6aa9; TEXT-DECORATION: underline
}
.box .tj_box LI {
	CLEAR: both; PADDING-RIGHT: 7px; PADDING-LEFT: 10px; BACKGROUND: =
url(title_bg.gif) repeat-x 50% bottom; PADDING-BOTTOM: 0px; OVERFLOW: =
hidden; COLOR: #a3a3a3; PADDING-TOP: 5px; HEIGHT: 100px
}
.box .tj_box LI SPAN {
	PADDING-RIGHT: 10px; FLOAT: left
}
.box .zz_box LI {
	CLEAR: both; PADDING-RIGHT: 7px; PADDING-LEFT: 7px; PADDING-BOTTOM: =
7px; OVERFLOW: hidden; COLOR: #a3a3a3; PADDING-TOP: 7px; HEIGHT: 175px
}
.box .zz_box LI SPAN {
	PADDING-RIGHT: 10px; FLOAT: left
}
.box .pl_box LI {
	PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 3px; COLOR: =
#666666; PADDING-TOP: 5px; BORDER-BOTTOM: #ccc 1px solid
}
.box .pl_box LI SPAN {
	COLOR: #999999
}
.box .pl_box LI H6 {
	PADDING-BOTTOM: 6px; COLOR: #ff3300; TEXT-INDENT: 24px; TEXT-ALIGN: =
left
}
.box .pl_box LI A.vo {
	COLOR: #2c6aa9
}
.ad_left {
	MARGIN-BOTTOM: 10px
}
.box .cy_box LI {
	PADDING-RIGHT: 5px; PADDING-LEFT: 5px; BACKGROUND: url(title_bg.gif) =
repeat-x 50% bottom; PADDING-BOTTOM: 10px; PADDING-TOP: 10px
}
.box .cy_box LI H4 {
	FONT-WEIGHT: bold; FONT-SIZE: 14px; PADDING-BOTTOM: 5px; COLOR: #2c2c2c
}
.box .cy_box LI SPAN {
	FONT-SIZE: 12px; FLOAT: right; COLOR: #a8a8a8
}
.box .cy_box LI A:link {
	COLOR: #2c6aa9
}
.box .cy_box LI A:visited {
	COLOR: #2c6aa9
}
.box .cy_box LI A:hover {
	COLOR: #2c6aa9; TEXT-DECORATION: underline
}
.box .sc_box LI {
	PADDING-RIGHT: 11px; PADDING-LEFT: 11px; BACKGROUND: url(title_bg.gif) =
repeat-x 50% bottom; PADDING-BOTTOM: 11px; LINE-HEIGHT: 21px; =
PADDING-TOP: 11px
}
.box .sc_box LI SPAN {
	PADDING-RIGHT: 10px; FLOAT: left
}
.box .sc_box LI SPAN B {
	DISPLAY: block; PADDING-TOP: 5px; TEXT-ALIGN: center
}
.box .sc_box LI A:link {
	COLOR: #2c6aa9
}
.box .sc_box LI A:visited {
	COLOR: #2c6aa9
}
.box .sc_box LI A:hover {
	COLOR: #2c6aa9; TEXT-DECORATION: underline
}
.box .tab H3 {
	FONT-SIZE: 12px; FLOAT: left
}
.box .tab UL.tabitem {
	FONT-SIZE: 12px; FLOAT: left
}
.box .tab UL.tabitem LI {
	FONT-SIZE: 12px; FLOAT: left
}
.box .tab UL.tabitem {
	LINE-HEIGHT: 2.3
}
.box .tab UL.tabitem LI {
	MARGIN: 0px -1px -1px 0px; POSITION: relative
}
.box .tab UL.tabitem A {
	PADDING-RIGHT: 5px; DISPLAY: block; PADDING-LEFT: 5px; PADDING-BOTTOM: =
0px; PADDING-TOP: 0px
}
.box .tab UL.tabitem A:link {
	COLOR: #275c91
}
.box .tab UL.tabitem A:visited {
	COLOR: #275c91
}
.box .tab UL.tabitem A.current {
	BORDER-RIGHT: #99bbdd 1px solid; PADDING-RIGHT: 4px; BORDER-TOP: =
#99bbdd 0px solid; PADDING-LEFT: 4px; BACKGROUND: #fff; PADDING-BOTTOM: =
0px; BORDER-LEFT: #99bbdd 1px solid; PADDING-TOP: 0px; BORDER-BOTTOM: =
#99bbdd 0px solid
}
.box .tab UL.tabitem A:hover {
	BORDER-RIGHT: #99bbdd 1px solid; PADDING-RIGHT: 4px; BORDER-TOP: =
#99bbdd 0px solid; PADDING-LEFT: 4px; BACKGROUND: #fff; PADDING-BOTTOM: =
0px; BORDER-LEFT: #99bbdd 1px solid; PADDING-TOP: 0px; BORDER-BOTTOM: =
#99bbdd 0px solid
}
HTML:first-child .box .tab UL.tabitem A.current {
	PADDING-BOTTOM: 1px; POSITION: relative
}
HTML:first-child .box .tab UL.tabitem A:hover {
	PADDING-BOTTOM: 1px; POSITION: relative
}
.wrap .recommendinfo {
	BORDER-RIGHT: #99bbdd 1px solid; BORDER-TOP: #99bbdd 1px solid; =
MARGIN-BOTTOM: 10px; BORDER-LEFT: #99bbdd 1px solid; WIDTH: 298px; =
BORDER-BOTTOM: #99bbdd 1px solid; HEIGHT: 104px
}
.recommendinfo H3 {
	DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 120%; BACKGROUND: =
#d7e7f7; FLOAT: left; MARGIN: 1px 5px 1px 1px; WIDTH: 30px; COLOR: =
#275c91; LINE-HEIGHT: 1.7; HEIGHT: 102px
}
.recommendinfo H3 SPAN {
	DISPLAY: block; MARGIN: 0px 5px; TEXT-ALIGN: center
}
.recommendinfo UL {
	FONT-SIZE: 120%; FLOAT: left; MARGIN: 3px 0px 0px; WIDTH: 250px; =
LINE-HEIGHT: 1.7
}
.recommendinfo LI {
	CLEAR: both
}
.recommendinfo .date {
	FONT-SIZE: 9px; FLOAT: right; COLOR: #999999; LINE-HEIGHT: 2
}
.times {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 15px; COLOR: =
#666666; PADDING-TOP: 15px; BORDER-BOTTOM: #e1e4e6 1px solid; =
TEXT-ALIGN: center
}
#news {
	BORDER-RIGHT: #99bbdd 1px solid; PADDING-RIGHT: 18px; BORDER-TOP: =
#99bbdd 1px solid; PADDING-LEFT: 18px; BACKGROUND: #f5faff; =
MARGIN-BOTTOM: 10px; PADDING-BOTTOM: 20px; BORDER-LEFT: #99bbdd 1px =
solid; COLOR: #4a4a4a; PADDING-TOP: 20px; BORDER-BOTTOM: #99bbdd 1px =
solid
}
H1 {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-WEIGHT: bold; FONT-SIZE: =
20px; PADDING-BOTTOM: 0px; MARGIN: 0px; COLOR: #363737; PADDING-TOP: =
0px; TEXT-ALIGN: center
}
.content {
	FONT-SIZE: 14px; MARGIN: 15px 0px 35px; COLOR: #2a2a2a; LINE-HEIGHT: =
25px
}
.content P {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 5px; =
PADDING-TOP: 5px
}
.content UL {
	LIST-STYLE-POSITION: inside; TEXT-INDENT: 2em; LIST-STYLE-TYPE: disc
}
.content OL {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; LIST-STYLE-POSITION: inside; =
PADDING-BOTTOM: 5px; TEXT-INDENT: 2em; PADDING-TOP: 5px; =
LIST-STYLE-TYPE: decimal
}
.content A:link {
	COLOR: blue
}
.content A:active {
	COLOR: blue
}
.content A:hover {
	COLOR: red; TEXT-DECORATION: underline
}
.xg {
	PADDING-RIGHT: 5px; BORDER-TOP: #e1e4e6 1px solid; PADDING-LEFT: 5px; =
MARGIN-BOTTOM: 10px; PADDING-BOTTOM: 5px; LINE-HEIGHT: 24px; =
PADDING-TOP: 5px; BORDER-BOTTOM: #e1e4e6 1px solid; HEIGHT: 130px
}
.xg LI {
	FLOAT: left; WIDTH: 50%
}
.news_title {
	BORDER-RIGHT: #99bbdd 1px solid; BORDER-TOP: #99bbdd 1px solid; =
PADDING-LEFT: 10px; FONT-WEIGHT: bold; FONT-SIZE: 14px; BACKGROUND: =
#d7e7f7; BORDER-LEFT: #99bbdd 1px solid; COLOR: #313131; LINE-HEIGHT: =
27px; BORDER-BOTTOM: #99bbdd 0px solid; HEIGHT: 27px
}
.news_title SPAN {
	FLOAT: right
}
.right_bot {
	MARGIN-BOTTOM: 10px
}
.right_box {
	BORDER-RIGHT: #99bbdd 1px solid; BORDER-TOP: #99bbdd 1px solid; =
BORDER-LEFT: #99bbdd 1px solid; BORDER-BOTTOM: #99bbdd 1px solid
}
.right_title {
	PADDING-LEFT: 10px; FONT-WEIGHT: bold; FONT-SIZE: 14px; BACKGROUND: =
#d7e7f7; COLOR: #313131; LINE-HEIGHT: 27px; BORDER-BOTTOM: #99bbdd 1px =
solid; HEIGHT: 27px
}
.right_box UL {
	PADDING-RIGHT: 5px; PADDING-LEFT: 10px; PADDING-BOTTOM: 5px; =
PADDING-TOP: 5px
}
.right_box UL LI {
	LINE-HEIGHT: 25px
}
.news_list UL {
	MARGIN-BOTTOM: 15px; PADDING-BOTTOM: 10px; BORDER-BOTTOM: #ccc 1px =
solid
}
.news_list UL .list_title {
	PADDING-LEFT: 23px; FONT-WEIGHT: bold; FONT-SIZE: 14px; BACKGROUND: =
url(list_title.gif) no-repeat 7px 7px; COLOR: #204e7d
}
.news_list UL .list_title SPAN {
	FONT-WEIGHT: normal; FONT-SIZE: 12px; FLOAT: right; COLOR: #787878
}
.news_list UL .ot SPAN {
	MARGIN-RIGHT: 50px
}
.news_list UL .text {
	PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 13px; COLOR: =
#878787; TEXT-INDENT: 5px; LINE-HEIGHT: 23px; PADDING-TOP: 13px
}
.news_list A:link {
	COLOR: #204e7d; TEXT-DECORATION: none
}
.news_list A:visited {
	COLOR: #999
}
.news_list A:hover {
	COLOR: #f03c0f; TEXT-DECORATION: underline
}
.line {