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

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# speed button quiz
counter that keeps track of how many times button "A" has been pressed #LED #screen #variables #docs #input
## Name
## Directions
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Use this activity document to guide your work in the [speed button tutorial](/microbit/lessons/speed-button/activity).
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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
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```blocks
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let count = 0
```
![](/static/mb/empty-microbit.png)
## 3. Draw which LED is ON after running this code and pressing Button A twice. Explain why you chose to draw that number
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```blocks
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let count_ = 0
input.onButtonPressed(Button.A, () => {
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count_ = count_ + 1
basic.showNumber(count_, 100)
})
```
![](/static/mb/empty-microbit.png)
<br/>
## 4. Draw which LED is ON after running this code and pressing Button A five times. Explain why you chose to draw that number.
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```blocks
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let count_ = 0
input.onButtonPressed(Button.A, () => {
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count_ = count_ + 1
basic.showNumber(count_, 100)
})
```
![](/static/mb/empty-microbit.png)
<br/>