The present invention relates to a notebook PC (PC) to measure the amount of light in accordance with the external environment and automatically extinguish the contrast ratio and backlight light amount to operate the notebook PC in the optimal conditions and suitable intelligence to minimize power consumption To provide a notebook-PC.;The intelligent notebook PC of the present invention implements an optimal condition when operating a notebook PC by inputting a light receiving element unit for receiving light according to an external environment and a voltage corresponding to the amount of light output from the light receiving element unit. And a control unit for outputting a control signal for controlling the display, a contrast control unit for adjusting the contrast of the screen according to the control signal of the control unit, and a backlight light amount control unit for controlling the light quantity of the backlight by the control signal of the control unit. It is characterized by.
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