pxt-calliope/olddocs/lessons/digi-yoyo.md
Tom Ball f4eca66648 move lessons out of web site
will move select lessons back to "educators" section
2016-06-14 11:49:58 -04:00

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digi yoyo lesson

Create a counter with a while loop.

Topic

While Loop

Prior learning/place of lesson in scheme of work

Learn how to creating a while loop, while condition do to repeat code while a condition is true. We will be learning how to create a digi yoyo app using a while loop, a variable, as well as basic commands, such as pause and show number.

Documentation

let x = 0
basic.showNumber(0)
while (true) {}
basic.pause(20)

Objectives

  • learn how to create a local variables to store data and use it in your code
  • learn how to set or change the value of a local variable
  • learn how to repeat code while a condition is true
  • learn how a relational comparison (<) of numbers will yield a Boolean
  • learn how to pause your code for the specified number of milliseconds
  • learn how to show a number on the LED screen