Adobe PDF files are a compressed file format that preserves all of the original text, graphics, and format attributes of a file for viewing and printing.
Microsoft Word is a document and text editor that uses the file extension .doc. To view a Word document, you need to use the Word software or other document editor that can read and convert Word documents, or you can install the free Microsoft Word viewer.
Microsoft Powerpoint is a slide presentation application that uses the file extension .ppt. To view a Powerpoint presentation, you need the Powerpoint software or other slide presentation software that can read Powerpoint.
Microsoft Excel is a spreadsheet software application that uses the file extension .xls. To view an Excel spreadsheet, you need to use Microsoft Excel or other spreadsheet application that can convert and read an Excel document.
These file types are graphical formats supported by most graphical web browsers. In most instances, no additional software or configuration is required.
ASCII files are created using standard binary character combinations. The files are commonly called text files. The text file viewer in your web browser loads ASCII files, and no special configuration is required.