pxt-calliope/docs/lessons/speed-button/quiz.md

speed button quiz

counter that keeps track of how many times button "A" has been pressed #LED #screen #variables #docs #input

Name

Directions

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

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

1. What is a variable?

2. Draw which LEDs show the number being stored as a global variable called count

let count = 0

3. Draw which LED is ON after running this code and pressing Button A twice. Explain why you chose to draw that number

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

4. Draw which LED is ON after running this code and pressing Button A five times. Explain why you chose to draw that number.

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