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3.2 Data Portability

3.2 Data Portability. Overview. Understand the need for data compression and software needed to compress/decompress data. Identify common file types such as jpeg, mpeg, gif, txt, csv, rtf, MP3, MP4, MIDI, pdf, html, zip. Data compression.

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3.2 Data Portability

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  1. 3.2 Data Portability

  2. Overview Understand the need for data compression and software needed to compress/decompress data. Identify common file types such as jpeg, mpeg, gif, txt, csv, rtf, MP3, MP4, MIDI, pdf, html, zip.

  3. Data compression • Using special software to reduce the size of a file. The file is then compressed. At the other end it then needs decompression software to read it. • Examples of software include: • Rar • Winzip

  4. File types

  5. File types

  6. File types

  7. File types

  8. Acronyms • jpeg • mpeg • gif • txt • csv • Rtf • MP3 • MP4 • MIDI • pdf • html • Zip • ASCII

  9. Exercise Complete the table for each of the following file extensions and add in two of your own.

  10. Research • Choose one graphic • Save it as a bmp • Then save it as a jpeg • Compare how much memory each takes up

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