1. 1 3 Computing System Fundamentals 3.5 Data Representation

2. 3.5.4 File Formats

3. 3 Text and data files Pure data can be held in a.dat file A pure Unicode file has the file extension.txt Save in this format, it will retain no formatting information (font, bold, tables, images...) Some formatting information is retained by.rtf Proprietary formats e.g..doc may not be readable by all computers.

4. 4 File extensions Extensions are information (invisible to most users) suffixed to the file name informing the computer how to interpret the binary code of the file itself. The code contains much hidden (meta) data that needs to be interpreted in a certain way.

5. 5 File extensions Other file extensions that you may come across ‣.doc.bmp.mp3.docx.jpg.wav.rtf.gif.aac.dot.png.xls.pdf.swf.wmv.csv.exe.mov

6. 6 File extensions Other file extensions that you may come across ‣.doc.bmp.mp3.docx.jpg.wav.rtf.gif.aac.dot.png.xls.pdf.swf.wmv.csv.exe.mov