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Air

Because of the global existence warming then the temperature became hot, so as we must look for the artificial wind to stifle the blowing hot climate. Beforehand was with the fan from paper that was used manual enough by using the hands. Together with the development of the time was created the electric ventilator that used the electricity power. Afterwards was again created the new discovery of Air Conditioner that was sophisticated and digital where could tune the temperature and time that were wanted. But equipment AC this was expensive and wasteful electricity as well as freon increasingly increased the global cause warming in the earth.

Until MP3 or DVD

The progress of technology continued to develop from time to time with very fast. For the media player previously used the cassette, developing was CD that could returned automatically with the quality of the better voice. Developing still to MP3 that could contain the song until hundreds. Then had VCD that could put forward the video or the moving picture, developed by DVD that could contain more because several of VCD could be made in one DVD.