light dependent resistor造句

Hi all if someone knows please tell me when is LDR ( light dependent resistor ) is invented and by whom.
It uses an light dependent resistor to provide gain reduction, which, in the LA-2A, is called the T4 cell.
When the light level changes, the light sensor's Light Dependent Resistor circuitry automatically adjusts the picture-- brighter in a room with bright light and darker for a dimly-lit room.
It's difficult to find light dependent resistor in a sentence. 用light dependent resistor造句挺难的