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  2. Obsolescence - Wikipedia

    en.wikipedia.org/wiki/Obsolescence

    Technical obsolescence usually occurs when a new product or technology supersedes the old one, and it is preferred to use the new technology instead. Historical examples of new technologies superseding old ones include bronze replacing flint in hand-tools, DVDs replacing videocassettes, and the telephone replacing the telegraph. On a smaller ...

  3. History of PDF - Wikipedia

    en.wikipedia.org/wiki/History_of_PDF

    Documents containing Adobe extended features still carry the PDF base version number 1.7 but also contain an indication of which extension was followed during document creation. [21] PDF documents conforming to ISO 32000-2 carry the PDF version number 2.0, and are known to developers as "PDF 2.0 documents".

  4. Digital obsolescence - Wikipedia

    en.wikipedia.org/wiki/Digital_obsolescence

    Technical obsolescence, or the adoption of newer, more accessible technologies with the intention to replace older, often outdated software or hardware, occurring on the side of the consumer or manufacturer.

  5. List of obsolete technology - Wikipedia

    en.wikipedia.org/wiki/List_of_obsolete_technology

    Obsolete technology Replacement Still used for Bathing machine: No longer required due to changing social standards of morality Hourglass: Clock: Tasks where a fixed amount of time can be measured with a low-tech solution: Exposure time tracker in saunas (where electronics might be damaged by the heat or ultraviolet light); retro kitchen timers, board games, other short-term timers.

  6. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Before PDF version 1.5, the table would always be in a special ASCII format, be marked with the xref keyword, and follow the main body composed of indirect objects. Version 1.5 introduced optional cross-reference streams, which have the form of a standard stream object, possibly with filters applied. Such a stream may be used instead of the ...

  7. List of computer term etymologies - Wikipedia

    en.wikipedia.org/wiki/List_of_computer_term...

    It was originally named 'Googol', a word for the number represented by 1 followed by 100 zeros. The word was originally invented by Milton Sirotta, nephew of mathematician Edward Kasner, in 1938 during a discussion of large numbers and exponential notation. Gopher – an early protocol for distributing documents over a network.