西門子觸摸屏做為一種的計算機外設，它是目前簡單、方便、自然的一種人機交互方式。它賦予了多媒體以嶄新的面貌，是富吸引力的全新多媒體交互設備。觸摸屏在我國的應用范圍非常廣闊，主要是公共信息的查詢；如電信局、稅務局、銀行、電力等部門的業務查詢；城市街頭的信息查詢；此外應用于辦公、工業控制、指揮、電子游戲、點歌點菜、多媒體教學、房地產預售等。尤其是公共場合信息查詢服務，它的使用與推廣大大方便了人們查閱和獲取各種信息。可是你對觸摸屏了解多少呢？ 觸摸屏的種類與原理： 觸摸屏的基本原理是，用手指或其他物體觸摸安裝在顯示器前端的觸摸屏時，所觸摸的位置(以坐標形式)由觸摸屏控制器檢測，并通過接口(如RS-232串行口)送到CPU，從而確定輸入的信息。 觸摸屏系統一般包括觸摸屏控制器(卡)和觸摸檢測裝置兩個部分。其中，觸摸屏控制器(卡)的主要作用是從觸摸點檢測裝置上接收觸摸信息，并將它轉換成觸點坐標，再送給CPU，它同時能接收CPU發來的命令并加以執行：觸摸檢測裝置一般安裝在顯示器的前端，主要作用是檢測用戶的觸摸位置，并傳送給觸摸屏控制卡。STANDARD" 321 - IC693PWR321
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