Kilobyte (KB)
Definition: A kilobyte (symbol: KB) is a multiple of the unit byte for digital information. The prefix kilo means 10^3 in the SI. Therefore, one kilobyte is one thousand bytes. However, in the binary system, 1 KB is often defined as 1024 bytes.
History/origin: The kilobyte was introduced as part of the metric system in 1795. It was originally defined as 1,000 bytes. In the binary system, it is defined as 1,024 bytes.
Current use: The kilobyte is typically used to measure the size of very small files, such as text documents, small images, and snippets of code.
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.