西門子模塊6ES7134-4GB52-0AB0 |
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價格:52 元(人民幣) | 產(chǎn)地:進口 |
最少起訂量:1臺 | 發(fā)貨地:廈門 | |
上架時間:2023-11-06 11:33:35 | 瀏覽量:57 | |
廈門海通華業(yè)科技有限公司
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經(jīng)營模式:代理商 | 公司類型:私營有限責任公司 | |
所屬行業(yè):PLC控制系統(tǒng) | 主要客戶:電廠,鋼鐵廠,水泥廠, | |
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聯(lián)系人:易工 (先生) | 手機:18065920203 |
電話: |
傳真: |
郵箱:79903836@qq.com | 地址:廈門市海滄區(qū)滄湖東一里502號2502室 |
根據(jù)屏的引出線數(shù),又分有4線、5線及多線,門檻低,成本相對價廉,優(yōu)點是不受灰塵、溫度、濕度的影響。缺點也很明顯,外層屏膜很容易刮花,不能使用尖銳的物體點觸屏面。一般是不能多點觸控,即只能支持單點,若同時按壓兩個或兩個以上的觸點,是不能被識別和找到坐標的。在電阻屏上要將一幅圖片放大,就只能多次點擊“+”,使圖片逐步進階式放大,這就是電阻屏的基本技術原理。 利用壓力感應進行控制。當手指觸摸屏幕時,兩層導電層在觸摸點位置就有了接觸,電阻發(fā)生變化。在X和Y兩個方向上產(chǎn)生信號,然后傳送到觸摸屏控制器?刂破鱾蓽y到這一接觸并計算出(X,Y)的位置,再根據(jù)模擬鼠標的方式運作。電阻式觸摸屏不怕塵埃、水及污垢影響,能在惡劣環(huán)境下工作。但由于復合薄膜的外層采用塑膠材料,抗爆性較差,使用壽命受到一定影響。 電阻式觸摸屏利用壓力感應進行控制,它的表層是一層塑膠,底層是一層玻璃,能承受惡劣環(huán)境因素的干擾,但手感和透光性較差,適合佩帶手套和不能用手直接觸摸的場合。 ZIATECH ZT8907-S355A ZT8907S355A-NOS FREE SHIPPING ZIATECH CIRCUIT BOARD ZT 8902 SBC 486 ZIATECH ZT 5541A 1B CompactPCI P3 500 MHz CPU Board W/ HDD TEKNOR MICROSYSTEM STD ZIATECH ZT8901 CPU CARD PCB From Canada Ziatech ZT8902 Circuit Board Rev B PCB- 8902-B.2 #7859 TEL Ziatech PCA 20-Bit Memory Module Card ZT8820B Ziatech ZT-8902 CPU Board ! WOW ! 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