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| Pregunta | Respuesta |
| Data file types | Data files are stored in a number of formats, the formats depend on which application created the file to begin with. For example, Microsoft Word stores files as *.doc but Adobe Photoshop stores files in a different format - *.psd. The file extension identifies the file's format. |
| Opening files of different formats | When data is transferred from one computer to another, the computer receiving the data file may not be able to read the format without the right application installed. For example, an image created in Adobe Photoshop and saved as a *.psd file (Photoshop's format) would not be readable by Microsoft Paint |
| Translating between file types | Data can be stored temporarily in a computer's RAM as a means of transfer from one application to another. In Microsoft operating systems this feature is called the clipboard and it can copy data from one application and paste it into another. Nearly all other operating systems support this functionality. |
| Limitations | 1.Certain elements of one document may not be copiable to another application, eg video. 2.Some file features (eg text layout and formatting) may be lost in the translation to a different format |
| Import and export | Most applications have the ability to import and export data. Export saves the file in a format that's readable by other applications. Import opens a file created in another application for viewing or editing. |
| Standard file types | The need to import and export data files has led to the development of several standard file types that many applications can understand. Examples are jpg and gif files for images, and mp3 files for sound; but there are also standard file types for text, movies, and spreadsheet data. |
| Rapid transfer of data | Files can be easily transferred and shared across the globe using the internet. A file could be: emailed as an attachment , sent over instant messenger , downloaded from a website/web server, accessed over a private network |
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