The 7 segment display is used as a numerical indicator on many types of test equipment. For that color 2nd LED is on and 7Segment display number is 1 also 16Segment display a symbol shown in the figure 6. The key to the operation of the color sensor is that applying for example a red light to a red object will reflect a higher intensity of light than if we apply green or blue light to the same red object. Black Color Figure 6. After substantial experimentation, the blue and green plates were too pale for use individually.
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