A megabyte is a unit of information or computer storage equal to either (1,000,000) bytes or (1,048,576) bytes, depending on context. In rare cases, it is used to mean 1000×1024 (1,024,000) bytes. It is commonly abbreviated as Mbyte or MB (compare Mb, for the megabit). The term megabyte was coined in 1970
The term "megabyte" is ambiguous because it is commonly used to mean either 1000 to the 2 power bytes or 1024 to the 2 power bytes
1,048,576 bytes --> This definition is most commonly used in reference to computer memory, but most software that display file size or drive capacity, including file managers also use this definition.
1,000,000 bytes --> This is the definition recommended by the International System of Units (SI) and the International Electrotechnical Commission IEC. This definition is used in networking contexts and most storage media, particularly hard drives, Flash-based storage, and DVDs, and is also consistent with the other uses of the SI prefix in computing, such as CPU clock speeds or measures of performance.
1,024,000 bytes --> This is used to describe the formatted capacity of USB flash drives and the "1.44 MB" 3.5 inch HD floppy disk, which actually has a 1,440 KiB capacity, that is, 1,440×1,024 bytes, or 1,474,560 bytes.
Answered by
Om Prakash
, an ibibo Master,
at
6:15 PM on May 09, 2008