Code 07 RGB LEDs and Programming Quiz

What does RGB stand for in RGB LEDs?

• Red, Green, Blue

• Red, Gold, Black

• Red, Gray, Blue

• Red, Green, Black

What is the name of the list that stores the color LEDs on the board?

• colorList

• colorLeds

• ledColors

• rgbLeds

Which position is the first RGB LED located on the board?

• Position 0

• Position 1

• Position 5

• Position 9

How can you set the color of an RGB LED using a color name?

• colorLeds[0].color("red")

• colorLeds[0].setColor("red")

• colorLeds[0].set("red")

• colorLeds[0].changeColor("red")

Which of the following is a correct way to set an RGB LED to a specific color using a hexadecimal string?

• colorLeds[0].color("#ff0000")

• colorLeds[0].color("255,0,0")

• colorLeds[0].color("red")

• colorLeds[0].color("rgb(255,0,0)")

If you want to set an RGB LED to pure red using the rgb() command, which code would you use?

• colorLeds[0].color(rgb(255, 0, 0))

• colorLeds[0].color(rgb(0, 255, 0))

• colorLeds[0].color(rgb(0, 0, 255))

• colorLeds[0].color(rgb(255, 255, 0))

Why are the LEDs called RGB LEDs?

• Because each LED is made up of a red, green, and blue smaller LED

• Because they are arranged in a rainbow pattern

• Because they only display red, green, or blue colors

• Because they are brighter than normal LEDs

What happens if colorLeds[1].color() is called?

• It will both set the color and turn the LED on

• It will only turn the LED off

• It will only set the color but not turn the LED on

• It will reset all LEDs to white

Based on the diagram, which LED is located next to the green Power LED?

• LED 0

• LED 5

• LED 9

• LED 3

Suppose you want to make all LEDs on the board display the same color at once. Which approach would be most efficient?

• Use a loop to set each colorLeds[i].color() for all i from 0 to 9

• Set only colorLeds[0].color()

• Set only colorLeds[9].color()

• Change the board’s power supply