pxt-calliope/docs/lessons/answering-machine/quiz-answers.md

# answering machine blocks quiz answers

Create an answering machine on the micro:bit. #LED #screen #show #math #docs #input

This is the answer key for the [answering machine quiz](/microbit/lessons/answering-machine/quiz).

## 1. Define what `show string` does?

Answers may vary. This is a function that will show a string on the LED screen one character at a time (scrolling from left to right).

## 2. Draw which LED is ON after running this code

```blocks
basic.showString("Y")

```

![](/static/mb/lessons/answering-machine-0.png)

## 3. Draw which LED is ON after running this code


```blocks
basic.showString("Hi")

```

![](/static/mb/lessons/answering-machine-1.png)


## 4. If the rectangle below represents the micro:bit, write the code to display the letter "Z".

![](/static/mb/lessons/answering-machine-2.png)


```blocks
basic.showString("Z")

```