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The gigabyte (GB) equals 1,024 megabytes or roughly 1.07 billion bytes, representing the standard measurement for storage capacity on phones, laptops, and USB drives. A typical HD movie requires 2 to 4 GB of space, and most mobile data plans are measured in gigabytes per month. It bridges the gap between everyday file sizes and large-scale data storage.

The bit is the most fundamental unit of digital information, representing a single binary value of either 0 or 1. Every piece of data stored or transmitted across the internet ultimately consists of bits, from a single text character to high-definition video streams. Eight bits make up one byte, which is why data storage is typically discussed in bytes rather than bits.