明緯已推出6~220W全系列綠色環保電源適配器(Green adaptor)，符合美國新能源法EISA2007(Energy Independence and SecurityAct)之要求，以響應全球環保與節能之趨勢。全系列產品皆符合EISA之待機消耗瓦數<0.5W與平均工作效率之要求，部分機種更可符合能源之星極低待機消耗瓦數<0.3W與平均工作效率最高達94.5%。請參考以下”符合EISA機種對照表”及”符合能源之星機種對照表”，您可更快速了解明緯已符合北美能源法規之環保節能電源適配器機種。
針對目前使用的RS232接口數字化B超鍵盤存在PC主機啟動時不能設置BIOS，提出一種PS2鍵盤的設計方法。基于W78E052D單片機，采用8通道串行A/D轉換器設計了8個TGC電位器信息采集電路，電位器位置信息以鍵盤掃描碼序列形式發送，正交編碼器信號通過XC9536XL轉換為單片機可接收的中斷信號，軟件接收到中斷信息后等效處理成按鍵。結果表明，在滿足開機可設置BIOS同時，又可實現超聲特有功能，不需要專門設計驅動程序，接口簡單，成本低。
Abstract: Aiming at the problem of the digital ultrasonic diagnostic imaging system keyboard with RS232 interface currently used couldn?蒺t set the BIOS when the PC boot， this paper proposed a design method of PS2 keyboards. Based on W78E052D microcontroller，designed eight TGC potentiometers information acquisition circuit with 8-channel serial A/D converter， potentiometer position information sent out with keyboard scan code sequentially.The control circuit based on XC9536 CPLD is used for converting the mechanical actions of the encoders into the signals that can be identified by the MCU， software received interrupt information and equivalently treatmented as key. The results show that the BIOS can be set to meet the boot， ultrasound specific functionality can be achieved at the same time， it does not require specially designed driver，the interface is simple and low cost.
