| It isn't possible to conceive our life with no computers. Personal computer is an indispensable instrument of our daily life. We use PC for working in the office and for amusement at home. Listening to music, watching video, playing games, studying the Internet and a large number of other things are possible by means of computer. The computer is also a considerable means of storing and exchanging info. There is a great number of file formats nowadays applied for a diversity of purposes. One of the most popular formats for documents exchange is nowadays PDF format. PDF stands for portable document file and constitutes an open standard for exchanging documents. The PDF files format serves for displaying 2D documents with no dependence on hardware, software or operating system. Every PDF document can consist of fonts, texts, images and two-dimensional vector graphics.
Portable document file format was created by Adobe Systems in 1993 and these days it constitutes the most widespread means of exchanging two-dimensional documents amidst computer users. Today even three-dimensional drawings can be embedded to PDF files with the help of specialized computer programs. From the very beginning PDF represented a proprietary format, but in the year of 2008 it was officially released as an open standard and was also published in the documents of the International Organization for Standardization.
In addition to its function of displaying 2D information PDF format makes it possible to edit files, to copy the text, to make a photosnap of any part of the PDF file, to print the document and so on. But at the same time when creating the PDF file you get a possibility to limit or to prohibit the rights of editing to other users. As a matter of fact, it's even possible to prohibit all the operations except for viewing the document. In this case you will be certain that no one can copy info or print the exchanged PDF document. PDF format is widely used for electronic manuals, books, guides and tutorials. |
