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標(biāo)題: 走字顯示屏幾種比較常見的信號，希望對大家有用 [打印本頁]

作者: zhang67 時間: 2009-5-11 10:33
標(biāo)題: 走字顯示屏幾種比較常見的信號，希望對大家有用
CLK時鐘信號：提供給移位寄存器的移位脈沖，每一個脈沖將引起數(shù)據(jù)移入或移出一位。數(shù)據(jù)口上的數(shù)據(jù)必須與時鐘信號協(xié)調(diào)才能正常傳送數(shù)據(jù)，數(shù)據(jù)信號的頻率必須是時鐘信號的頻率的1/2倍。在任何情況下，當(dāng)時鐘信號有異常時，會使整板顯示雜亂無章。

　　STB鎖存信號：將移位寄存器內(nèi)的數(shù)據(jù)送到鎖存器，并將其數(shù)據(jù)內(nèi)容通過驅(qū)動電路點亮LED顯示出來。但由于驅(qū)動電路受EN使能信號控制，其點亮的前提必須是使能為開啟狀態(tài)。鎖存信號也須要與時鐘信號協(xié)調(diào)才能顯示出完整的圖象。在任何情況下，當(dāng)鎖存信號有異常時，會使整板顯示雜亂無章。

　　EN使能信號：整屏亮度控制信號，也用于顯示屏消隱。只要調(diào)整它的占空比就可以控制亮度的變化。當(dāng)使能信號出現(xiàn)異常時，整屏將會出現(xiàn)不亮、暗亮或拖尾等現(xiàn)象。

　　數(shù)據(jù)信號：提供顯示圖象所需要的數(shù)據(jù)。必須與時鐘信號協(xié)調(diào)才能將數(shù)據(jù)傳送到任何一個顯示點。一般在顯示屏中紅綠藍的數(shù)據(jù)信號分離開來，若某數(shù)據(jù)信號短路到正極或負極時，則對應(yīng)的該顏色將會出現(xiàn)全亮或不亮，當(dāng)數(shù)據(jù)信號被懸空時對應(yīng)的顏色顯示情況不定。

　　ABCD行信號：只有在動態(tài)掃描顯示時才存在，ABCD其實是二進制數(shù)，A是最低位，如果用二進制表示ABCD信號控制最大范圍是16行（1111），1/4掃描中只要AB信號就可以了，因為AB信號的表示范圍是4行（11）。當(dāng)行控制信號出現(xiàn)異常時，將會出現(xiàn)顯示錯位、高亮或圖像重疊等現(xiàn)象。

作者: hongzikai 時間: 2009-5-11 19:18
好文章DDDDDDDDDDDDDDDDD

作者: jinqiao 時間: 2009-5-12 09:02
的確是好文章，好理解支持！?。。。。。。。。?hr noshade size="2" width="100%" color="#808080"> 作者: cxg0113 時間: 2009-5-12 17:37
[whitepad]***400;200;400,200;;** m30,28 l34,28,34,27,46,27,48,26,63,26,63,33,62,35,52,45,50,48,47,52,43,55,41,60,39,62,35,68,29,74,26,74,25,73 e|********* m32,39 l34,39,35,40,36,42,38,43,42,49,45,52,49,57,54,64,58,67,60,72,63,75,66,77,68,80,72,82,74,86,76,87,80,87,81,85 e|********* m103,13 l103,18,102,19,102,20,101,22,98,25,98,26,97,28,96,28,93,31,93,32 e|********* m102,23 l107,23,111,24,134,24,136,23,138,23 e|********* m105,27 l106,27,106,43,107,45,107,49,108,49,108,48,109,46,111,44 e|********* m111,32 l112,32,112,31,115,31,116,30,127,30,127,52 e|********* m110,41 l110,40,121,40,125,39,127,39 e|********* m112,49 l121,49,124,47,142,47,141,46 e|********* m107,43 l107,55,105,57,105,59,104,61,104,62,103,63,101,67,99,69,98,69,98,70,97,72,96,72 e|********* m105,59 l115,59,120,57,121,57,125,55,127,55,128,54,130,54,130,61,129,63,127,66,127,68,125,72,125,73,124,74,111,74,109,75,104,75,104,74,103,73,102,73 101,72,100,72 e|********* m115,61 l115,64,118,67,119,69,124,74,126,75,127,77,128,78,129,80,130,81,132,81,132,82,150,82,153,83,161,83,161,78,159,74 e|********* m160,35 l160,34,161,33,162,33,162,31,163,31,167,29,168,28,172,25,173,25,173,24,177,24,178,25,180,26,182,28,186,30,187,30,188,31,189,31,189,33,190,34 190,35,191,37,191,39,192,42,193,44,193,60,192,61,192,63,191,64,191,65,185,77,185,78,184,80,183,81,181,85,181,86,180,87,179,87,179,86,178,86 177,85,176,82,172,78,172,76,171,75,170,72,168,70,166,64,162,61 e|********* m167,43 l167,44,171,44,179,48,181,48 e|********* m157,66 l158,66,158,65,159,64,165,61,168,60,172,57,178,54,179,54,181,52,181,49 e|********* m211,33 l211,32,213,32,216,30,218,29,227,26,231,25,232,25,233,24,237,24,239,26,239,40,225,40,223,41,223,42,222,42,222,43,223,44,224,46,232,54,232,62 233,63,233,81,232,81,232,82,226,82,226,83,213,83,213,62,209,50 e|********* m35,130 l40,130,43,128,46,127,49,127,53,125,59,125,62,123,75,123 e|********* m100,106 l108,106,114,104,120,103,128,102,134,101,139,99,145,98,149,97,155,95,157,94,158,94 e|********* m133,104 l133,139,132,139,132,143,131,145,131,155 e|********* m134,116 l136,116,138,117,142,117,143,118,148,118,148,126,149,127,149,129,150,129,150,130 e|********* m158,145 l156,145,155,146,155,147,149,147 e|********* m205,95 l205,99 e|********* m204,95 l204,102 e|********* m191,112 l196,112,197,111,200,111,200,110,201,110,201,109,202,108,206,108,206,109,205,109,204,111,204,112,201,115,201,117,200,117,200,119,199,122,198,123,198,126,197,128 197,132,196,132,196,153,201,148,202,145,205,143,208,138,209,136,209,133 e|********* m220,95 l220,97,219,98,219,99,218,99,217,101,217,102,214,105,214,106,212,108,212,109,211,109,211,111,210,111,210,112,209,112,207,113,206,114,206,115,204,117 e|********* m210,105 l210,135,211,135,211,133 e|********* m209,110 l211,110,212,109,213,109,215,108,225,108,229,106,233,106,234,105,235,105,235,111,234,112,234,171,233,169,233,168,232,168,232,166,231,165,231,163,230,161,228,158 227,154,225,147,222,142 e|********* m219,120 l220,119,223,119,226,117,230,117,235,115,239,114,242,113,244,112,241,112 e|********* m218,131 l218,130,219,129,222,129,223,128,225,128,225,127 e|********* m203,135 l203,136,213,136,222,135,224,135,224,134 e|********* m244,113 l245,112,246,112,246,111,247,111,247,110,249,110,250,109,251,109,251,108,266,108,260,105 e|********* m251,88 l251,156,249,156,249,157,241,157,241,156,240,155,240,153,239,152,236,147 e|********* m235,127 l238,127,240,128,241,129,241,130,242,131,244,131,245,132,247,133,246,132,246,131 e|********* m283,90 l283,105 e|********* m270,111 l272,111,273,110,274,110,274,109,278,109,278,112,277,112,277,113,274,119,273,122,272,123,271,126,270,128,270,130,268,133,267,135,267,138,266,139,266,141,265,142 265,144,264,145,264,160,265,160,266,161,267,163,269,165,281,165,281,160,280,159,280,144,281,140,282,135,283,132,283,129 e|********* m310,96 l310,97,309,97,308,98,307,100,307,101,305,103,305,104,303,105,301,109,300,110,299,112,296,115,296,116,295,116,295,117,293,117 e|********* m290,117 l290,120,291,123,292,125,292,133 e|********* m293,124 l294,124,294,123,296,122,297,122,297,121,298,121,298,120,300,120,300,119,301,119,301,118,303,117,305,117,306,116,308,116,308,170,306,170,306,171,302,171,302,170 301,169,299,168,295,164,295,163,294,162,294,161 e|********* m295,128 l297,128,297,127,310,127 e|********* m296,135 l301,135,301,134 e|********* m289,139 l302,139,302,138,299,138 e|********* m290,149 l290,148,291,147,292,147,294,146,297,145,300,142,303,141,309,138,309,137,308,137 e|********* m308,126 l310,126,312,125,317,123,319,123,321,122,324,119,325,119,327,118,327,112 e|********* m318,101 l318,118,317,120,317,138,318,141,318,142,319,144,320,145,320,164,318,164,318,165,304,165,304,159,305,157 e|********* m310,136 l314,136,318,138,319,139,320,139,321,140,321,139 e|********* m341,99 l341,107,342,110,342,121,343,124,343,127,344,130,344,140 e|********* m342,157 l343,157,343,151 e[/whitepad]

作者: sxl811118 時間: 2009-5-14 12:58
很想學(xué)！但力不從心，看不懂啊。。。不知怎么辦是好

作者: 輝煌 時間: 2009-5-24 17:09
???//?????????????、？

作者: 蘭蘭的海 時間: 2009-6-3 14:21
好東西！謝謝分享??！

作者: cslcsl 時間: 2009-6-4 23:46
新人學(xué)習(xí)中好經(jīng)驗值得學(xué)習(xí)的好經(jīng)驗，頂了?。。。。。。。。。。。?！

作者: 凌晨三點半 時間: 2009-6-8 13:14
[whitepad]***400;200;400,200;;*7.5; m136,54 l133,54,129,57,127,63,121,70,118,76,116,81,113,87,110,92,107,98,104,106,100,116,99,119,99,125,100,129,106,133,112,135,122,140,128,142,133,143,141,143 142,141,143,140,146,140,150,136,154,133,156,130,160,127,163,123,166,121,167,118,168,117,168,116,169,114,169,112,167,111,166,110,165,110,163,109,155,109,150,110 146,112,139,116,134,119,127,124,121,128,114,134,111,138,105,143,100,148,97,150,94,154,92,155,92,156,90,158,79,158,78,156,76,154,75,152,73,142,73,135 72,131,72,126,73,122,75,120,76,118,79,115,93,105,104,100,114,95,125,93,135,90,144,88,151,86,157,84,164,82,170,79,172,79,173,78,174,78,174,77 175,77,177,75,180,74,187,72,195,71,218,71,219,72,218,76,216,80,215,86,213,96,213,100,209,110,207,116,203,123,201,128,197,135,194,143,191,150,185,160 183,163,181,168,179,170,178,172,177,172,173,168,170,160,168,150,167,142,170,135,171,129,175,123,186,112,190,107,196,104,205,101,232,101 e[/whitepad]

作者: lifeng 時間: 2009-10-5 11:47
好東西 .............................

作者: 揚州 時間: 2009-10-26 23:17
好的不的了真夠好的222

作者: 蚌埠LED 時間: 2009-11-2 00:00
的確是好文章，好理解支持?。。。。。。。。。　?hr noshade size="2" width="100%" color="#808080"> 作者: 外交團 時間: 2009-11-10 18:25
xwtpkxwtpk...............................

作者: zhuimeng 時間: 2009-12-2 23:13
萊鳥學(xué)習(xí)……請大家多少指點指點:P

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