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Cereal song calculator calculates frequency of large number subtration to make m
From;    Author:Stand originally

[Hui Cong manages network of general articles for use] According to foreign media coverage, a few indescribable mistakes can appear when song calculator is calculating cereal to count subtration greatly, although Microsoft and Intel also had made similar mistake, but to names with large number Gu Ge character, such mistake appears some not should.

Gu Ge (Google) name originates " Googol " (100 of 10 square, word of analogy amount to is tremendous) , when song calculator is calculating Dan Gu to count subtration greatly, not be very accurate however. For example, calculating 2, 999, 999, 999, 999, 999 decrease 2, 999, 999, 999, 999, 98 when, right answer should be " 1 " , the answer that Dan Gu song gives out is however " 0 " .

This is not an exemple, calculating 1, 999, 999, 999, 999, 999 decrease 1, 999, 999, 999, 999, 995 when, the answer that Gu Ge gives out is " 0 " , but computation 1, 999, 999, 999, 999, 999 decrease 1, 999, 999, 999, 999, 993 when, can give out however right answer " 6 " . Computation 400, 000, 000, 000, 002 decrease 400, 000, 000, 000, 001 when, the answer that Gu Ge gives out is " 0 " , but computation 400, 000, 000, 000, 002 decrease 400, 000, 000, 000, 000 when, give out again however right answer " 2 " .

Having so large-scale consideration is a more difficult issue really, in actual life, requirement of very few meeting is such accurate. For example, when computation is apart from between the heavenly body, arrive accurately almost impossibly centimeter, and necessary without this kind also.

The computer can identify a binary system to count accord with directly only 0 with 1, and the mankind is used generally 10 into make. When the computer 0-9 when binary systems of these digital translate into are handled, want sacrificial accuracy indispensably.

To this, gu Ge admits, this calculator is not quite perfect still. Gu Ge says in a statement: "We had realized this problem, investigating deep at present. To giving an user any brought inconvenience, we express regret. "

Actually, a lot of calculators cannot be inputted at all " 1, 999, 999, 999, 999, 993 " so chief figure. Accordingly, gu Ge's mistake is excusable also. Additional, similar problem ever also had appeared before the processor of the Excel of Microsoft and Intel.