Actividad 7

doc: Microsoft Word
txt: Bloc de Notas, WordPad, Word...
pdf: Adobe Systems
avi: Microsoft
flv: Adobe Flash Player
mpg: Windows
3GP: Quicktime
wav: Microsoft/ IBM
xls: Microsoft Excel (Windows)
zip: Office Open XML, OpenDocument, XPI
rar: Windows
dll: Microsoft
ppt: Microsoft PowerPoint
pptx: Office Open XML
jpg: GIF, PNG, TIFF...
bmp: Windows Bitmap
swf: Adobe Flash
nbk: NovaBACKUP
sys: Microsoft
mp3: Windows