Chapter 3

It’s All About the Data

As you probably know, data is stored as zeros and ones in your computer’s memory. However, zeros and ones are not very useful to developers or app users, so we need to know how our program uses data and how data is stored on our computer.

In this chapter, we will look at how data is stored on computers and how we can manipulate that data. Then we’ll write a fun Alice app illustrating data storage and then write the same Alice app in Objective-C. So let’s get started!

Numbering Systems Used in Programming

Computers work with information differently than do humans. This section covers the various ways information is stored, tallied, and manipulated by devices such as your Mac, iPhone, and iPad.


A bit is ...

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