---
title: Processing
units: [Problem Solving and Computing]
summary: Computers turn inputs into outputs.
weight: 60
---

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## Today's Objectives
- Define processing as the work done (possibly by a computer) to turn an input into an output.
- Determine which types of processing are appropriate for a particular computing problem.
- Identify several common types of processing used in computing.

## Lesson Overview
### How do computers turn inputs into outputs?
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Computers turn inputs into outputs through processing.

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### What are the different ways computers can process information?
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There are four basic types of processing that computers can use:

- **If/Then**: If something is true, do something else.
- **Comparing**: Check whether things are the same or one is bigger than the other.
- **Finding a Match**: Search a list or group of things for a match.
- **Counting**: Keep track of how many of something there are.

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## Assignment
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### Apps and Processing
For each app on Code.org, record:

- The name of the app
- Every type of processing it uses
- Every specific example of how it turns inputs into outputs

### Your App Idea
Think of a new app idea. Record:

- The name of the app
- A description of the app
- Its inputs
- Its outputs
- Every type of processing it uses
- Every specific example of how it turns inputs into outputs