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如何检查LCD的坏点
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考题
result=(bool)(P0 这一句怎么该怎么解释
boollcd_bz(){//测lcd是否忙碌boolresult;lcd_rs=0;lcd_rw=1;lcd_en=1;_nop_();_nop_();_nop_();_nop_();result=(bool)(P0lcd_en=0;returnresult;}
考题
Which of the following statements about an LCD screen is not true?()
A. An LCD screen consumes more power than a CRT screen.B. An LCD screen display may present high-quality images but only to viewers sitting directly in fron of the screen.C. Currently, all laptops use LCD screens.D. An LCD screen is considerably more expensive than a CRT screen.
考题
多选题计算机的输出设备CRT纯平显示器与LCD液晶显示器的相比它的缺点是（）A体积大B不可调节的分辨率模式C重量重和功耗大D可视角度小和有坏点
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