Design a differential light detector using two white LEDs that determine the direction of the light source (as inputs). The circuit must have 3 outputs(LEDs) that goes ON when the brightness measure by the left-light sensor is 10% larger than the one measured by the right-light sensor. The other one is ON when the light sensor sees 10% more brightness than the left sensor. The third one goes ON if the brightness at the left sensor is in the range of -+10% of the right-light sensor.