Mike Krzyzewski is really a famous coach of Dream Team. She has coached north america men's basketball team for some time, that's clinched numerous medals for his country. Following Londonfl jerseys supplyn Olympic was over, Krzyzewski told The Associated Press that this game will be his final one as national coach, a job he's held for seven years. He had left open the possibility of swomen nfl jerseystaying with the team beyond the London Games, when practice on Saturday said these will be his last Olympics.When asked if he was sure, Krzyzewski didn't hesitate before again saying, "yecheap nfl jerseys wholesales," this will be his last game "If we could win it, then it might be three major championships in a row, i always do not know when that has been done because we haven't usually won http://govoriotkrito.bg/libs/nflcn08.htmthe globe championships," Krzyzewski said. "It becomes an enormous thing for the program." Whatever, he's an awesome coach. His achievement are going to be remembered by the country.cheap nfl jerseys
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    控制器的分類及功能

    2014/8/19 9:08:56點擊:

    控制器分組合邏輯控制器和微程序控制器,兩種控制器各有長處和短處。組合邏輯控制器設計麻煩,結構復雜,一旦設計完成,就不能再修改或擴充,但它的速度快。微程序控制器設計方便,結構簡單,修改或擴充都方便,修改一條機器指令的功能,只需重編所對應的微程序;要增加一條機器指令,只需在控制存儲器中增加一段微程序,但是,它是通過執行一段微程。具體對比如下:組合邏輯控制器又稱硬布線控制器,由邏輯電路構成,完全靠硬件來實現指令的功能。

    電磁吸盤控制器:交流電壓380V經變壓器降壓后,經過整流器整流變成110V直流后經控制裝置進入吸盤此時吸盤被充磁,退磁時通入反向電壓線路,控制器達到退磁功能。
    門禁控制器:門禁控制器工作在兩種模式之下。一種是巡檢模式,另一種是識別模式。在巡檢模式下,控制器不斷向讀卡器發送查詢代碼,并接收讀卡器的回復命令。這種模式會一直保持下去,直至讀卡器感應到卡片。當讀卡器感應到卡片后,讀卡器對控制器的巡檢命令產生不同的回復,在這個回復命令中,讀卡器將讀到的感應卡內碼數據傳送到門禁控制器,使門禁控制器進入到識別模式。在門禁控制器的識別模式下,門禁控制器分析感應卡內碼,同設備內存儲的卡片數據進行比對,并實施后續動作。門禁控制器完成接收數據的動作后,會發送命令回復讀卡器,使讀卡器恢復狀態,同時,門禁控制器重新回到巡檢模式。

     

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