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@@ -1907,13 +1907,13 @@ Most computers use the first bit for the sign:
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1 是负,0 是正
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and then use the remaining 31 bits for the number itself.
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用剩下 31 位来表示数字
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用剩下 31 位来表示符号外的数值
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That gives us a range of roughly plus or minus two billion.
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能表示的数字范围大约是正 20 亿到负 20 亿
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能表示的数的范围大约是正 20 亿到负 20 亿
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While this is a pretty big range of numbers, it's not enough for many tasks.
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虽然是很大的数,但有时还不够用
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虽然是很大的数,但许多情况下还不够用
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There are 7 billion people on the earth, and the US national debt is almost 20 trillion dollars after all.
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全球有 70 亿人口,美国国债近 20 万亿美元
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