Explore Microbit LED Display

What is the maximum number of LEDs on a Microbit?

• 20

• 15

• 25

• 30

How do you turn on an LED on the Microbit?

• Use 'basic.showNumber(1)' to turn on an LED.

• Use 'basic.showIcon(IconNames.Heart)' to turn on an LED in the shape of a heart.

• Use 'basic.showString("Hello")' to turn on an LED.

• Use 'basic.showLeds(". . . . .")' to turn on an LED.

What command would you use to clear the LED display?

• CLEAR ALL

• TURN OFF

• RESET

• CLEAR

Can you display a smiley face on the Microbit? How?

• Yes, you can display a smiley face on the Microbit using basic.showIcon(IconNames.Happy).

• You can only display text on the Microbit.

• Use display.showImage('happy') to show a smiley face.

• No, the Microbit cannot display any images.

What does the 'setPixel' function do?

• It deletes a specific pixel from an image.

• It changes the color of a specific pixel in an image or display.

• It retrieves the color of a specific pixel in an image.

• It creates a new image from scratch.

How can you create a scrolling text effect on the Microbit?

• Use the 'display' function to show images on the Microbit.

• Use the 'animate' function to create a text effect.

• Use the 'scroll' function with a string input in the Microbit programming environment.

• Write a loop to print text on the Microbit screen.

What is the purpose of the 'showString' function?

• To concatenate two string values.

• To convert a string to uppercase.

• To count the number of characters in a string.

• To display or output a string value.

How do you turn off all LEDs at once?

• Set all LED pins to HIGH.

• Use a software command to dim the LEDs.

• Set all LED pins to LOW.

• Disconnect the power supply to the LEDs.

What happens if you try to light up a pixel outside the 5x5 grid?

• The pixel lights up normally.

• The pixel changes color to indicate an error.

• The grid expands to accommodate the pixel.

• An error occurs or no action is taken.

Can you change the brightness of an LED on the Microbit? How?

• You can only turn the LED on or off, not adjust brightness.

• No, the brightness is fixed and cannot be changed.

• Yes, you can change the brightness of an LED on the Microbit using the 'set brightness' function.

• Brightness can be changed using a physical resistor.