GB

From WLCS

Technical Definiton A gigabyte(GB) is a form of data storage. It is equal to 1,073,741,824 bytes or 2^30.

Layman's Definition Gigabytes are commonly used to state the data storage available in CDs, flash drives, etc. because it is a larger unit than kilobytes and megabytes.

Example Today, many falsh drives are sold with varying amounts of data storage in gigabytes. The most common flash drives have at least 2GB.

If someone tapes a 2 hour movie they would need to store the data on a device that has at least 4.5GB storage.