Gigabyte (GB)
Definition: A gigabyte (symbol: GB) is a multiple of the unit byte for digital information. The prefix giga means 10^9 in the International System of Units (SI). Therefore, one gigabyte is one billion bytes. However, in the binary system, 1 GB is often defined as 1,073,741,824 bytes.
History/origin: The gigabyte was introduced as part of the metric system in 1795. It was originally defined as 1,000,000,000 bytes. In the binary system, it is defined as 1,073,741,824 bytes.
Current use: The gigabyte is commonly used to measure the capacity of computer storage, such as hard drives, SSDs, and USB flash drives, as well as the size of large files like videos and games.
Megabyte (MB)
Definition: A megabyte (symbol: MB) is a multiple of the unit byte for digital information. The prefix mega means 10^6 in the SI. Therefore, one megabyte is one million bytes. In the binary system, 1 MB is often defined as 1,048,576 bytes.
History/origin: The megabyte was introduced as part of the metric system in 1795. It was originally defined as 1,000,000 bytes. In the binary system, it is defined as 1,048,576 bytes.
Current use: The megabyte is commonly used to measure the size of files, such as high-resolution images, short audio clips, and documents.