pxt-calliope/docs/reference/js/lessons/counter/quiz.md

counter quiz

Learn how to create a counter with the BBC micro:bit button.

Name

Directions

Use this activity document to guide your work in the counter tutorial.

Answer the questions while completing the tutorial. Pay attention to the dialogues!

1. What is a variable?

2. Draw the stored value for the variable called count

let count = 0

3. Draw which LEDs are ON after running this code and pressing button "A" once. Explain you chose to draw that number

let count_ = 0
input.onButtonPressed("A", () => {
    count_ = count_ + 1
    basic.showNumber(count_, 100)
})

4. Draw which LEDs are ON after running this code and pressing button "A" three times. Explain you chose to draw that number

count_ = 0
input.onButtonPressed("A", () => {
    count_ = count_ + 1
    basic.showNumber(count_, 100)
})