Part C.

Five proprietary file types

• .doc
• .xls
• .ppt
• .cdr
• .psd

Five open file types

• .txt
• .csv
• .pdf
• .json
• .xml

Why Digital Obsolescence Matters?

we have to be aware of date loss, inaccessibility, future use, and data preservation. If software or hardware becomes obsolete, you may no longer be able to open or access your files, leading to data loss. Proprietary formats can become inaccessible if the software is discontinued or the format is changed. Digital obsolescence can prevent you from accessing and using valuable information in the future. Choosing open and preservation-friendly formats helps ensure the long-term accessibility and integrity of your digital information.