docx format and Doc format are word text format, but the gap between the two is actually very large, the difference between docx and Doc is significantly different size. docx format is a zip file, we can take winrar open docx file, get a bunch of files, very similar to Android or Win7 desktop form of the source code, you can find a variety of configuration files, text files and media files. The principle is the equivalent of two text documents, one to put text information, the other to configure the inside of the format, such as font, size and so on. This allows you to achieve a similar function in DOC format with two text files, so you can save volume.
When we create an empty document file, we found that the doc format is about 25KB, and docx is 0 bytes, so we know that the doc format of the configuration file should be at least 23KB, for only one page of the file you have how many words Ah, docx can save a lot of space.
What is the use of saving volume? For our average computer is not very useful, but for the server, the library can be useful, docx at least half of the space to save (more obvious when the picture is less) so that the library's ebook can be one more times, for such a computer is how terrible.
Docx and Doc The difference is another: the response speed, such as a lot of special effects and so on, as long as the changes to the configuration file can be, rather than the same as Doc repeatedly modify that large file. Now Docx has begun to replace the doc format, but still a lot of local doc format is dominant, if you really want to open docx format can be emergency Win7 Notepad, oh, I prefer to use the docx format, the province is also fast, but generally in the school to hand papers or DOC format.
Another point to mention is that the doc format is a Microsoft-specific format, and no external authorization, other office, such as WPS, Yong, OpenOffice, etc. although can open doc format, and most of them are no problem, but in very few places there will be errors (format or font, or line spacing, etc.).
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