Data in computing is measured in a unit called “Bytes.” One Byte is a single measurement of memory size. This unit describes eight binary digits. If you had sixteen binary digits (1s and 0s), that would be two bytes, and so forth.
Gigabytes measure two things: how much information travels over the internet (this is your cellular data plan, internet service speeds, etc.) and how much data gets stored in a device’s memory. The Gigabyte in computing refers to how much information your device can store.
We know it’s approximately one billion bytes, but what does that matter to you? Well, if you have a smartphone, tablet, gaming console, computer, or any other device with memory, you’ll need to understand how much information you can store on that device.
While a Word Doc would be a very small addition to your trunk, a movie would be a very large book. Especially considering you have to write the words, record the actions, and add an audio file. Most videos take up several Gigabytes of space in computing, while your documents may take a few Megabytes.