• 1. 二补数表示法: two's complement
• 2. 二的补数: Zweierkomplement

• 1.允许的数字表示法是二补数，一补数，和符号量值。注意所有这些数字系统同意正数数字的表示。
  The allowed number representations are two ' s - complement , one ' s - complement , and signed - magnitude . note that all of these number systems agree on the representation of positive numbers.
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• 2.第二部分讨论手机互联网填补数字鸿沟的可能意义，并提出研究假设。
  The second part discusses the mobile Internet to bridge the digital divide may be significant, and put forward the hypothesis.
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