Purview(noun) the body of a statute, or that part which begins with  Be it enacted,  as distinguished from the preamble. Purview(noun) the limit or scope of a statute; the whole extent of its intention or provisions. Purview(noun) limit or sphere of authority; scope; extent.
The difference between megabytes and gigabytes is the number of bytes that make up each unit and the amount of data they hold. A megabyte holds a million bytes, or about 1,000 kilobytes. A gigabyte holds about a billion bytes, or around 1,000 megabytes. Continue Reading.
The difference between units based on SI and binary prefixes increases exponentially in other words, an SI kilobyte is nearly 98% as much as a kibibyte, but a megabyte is under 96% as much as a mebibyte, and a gigabyte is just over 93% as much as a gibibyte.