Second, for those who are working the office, given in hand they must have phone for communication with partners, communicate with your boss or with investors. For accounting, telephone and computer as inseparable from them because of their work associated with them. They help increasing working efficiency is improved. Thanks to computer technology that man created more capable machines replace human work but also more efficient.
For teachers, teaching should be improved in order to train a lot to learn pretty good student, so the use of electronic devices to learn more new ones are urgently needed
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