When referring to Excel 2007, there are two file types you can use when you save a file, XML and binary. If you save the file as binary, then there is no difference between the two. If you save the file as XML, then the XML file contains XML formatting data (explanation beyond the scope of this question) and the binary file is formatted for computers to read directly.

In mobile microprocessors, the internal construction and external packaging have been optimized to provide minimum size and power consumption as well as maximum heat reduction.

That depends on what you want to do, xml tools include;

xml parsers

xml validators

xml editors

xml schema editors

xml code generators

what are the component of xml document what are the component of xml document

there is no source code, xml is not a programming language, its a markup language for which you create your own tags, the basic xml syntax is <xml> to start an xml file, and </xml> to end the xml file.