查询词典 binary coded decimal system

136 Chapter 1 The History and Future of Computers 3.1.4 Conversion From Decimal Converting from a Decimal Fraction.

转换十进制小数部分转换进制小数部分是用基数乘来完成的。

Decimal divided by fraction, When there's a multiple relationship between decimal and fraction, we can use reduce fractions.

小数除以分数，当小数与分数的分子有倍数关系时，可用直接约分法。

Floating-point numbers are defined as any number that contains a decimal fraction and that can be expressed in decimal or scientific notation, as shown in Listing 1.5

浮点型数值像任何包含一个小数的数那样定义，并且能用十进制或是科学计数法表示。如Listing 1.5所示

Whether the number is printed using decimal or scientific notation depends on the value of the floating-point number being printed. The library chooses a format that enhances readability of the number. Very large and very small values are printed using scientific notation. Other values use fixed decimal.

使用小数形式还是科学记数法显示数值取决于被显示的浮点数的值，标准库选择增强数值可读性的格式，非常大和非常小的值使用科学记数法显示，其他值使用小数形式。

In decimal form they are awkward numbers requiring the use of an infinite number of decimal places.

用小数的形式表达，它们是很难使用的数字，小数部分的位置需要无限多个数字。

The format array can be used to specify a decimal length, or a number and decimal length, eg

格式数组可以用于指定小数的长度或数字和小数的长度，例如

The integer and fractional part comprise decimal digits; the exponent part is an e or E followed by an optionally signed decimal exponent.

整数和分数部分包括十进制数；指数部分是一个 e or E 后面可选的跟着一上二进制指数。

In the early stage of the genetic algorithms, the three genetic mechanisms are used both in integer part and decimal part, so that the genetic algorithms have stronger global search ability, keep the population diversity efficiently and avoid falling into local extremum. In the later stage of the genetic algorithms, the three genetic operators are used in decimal part, so the genetic algorithms have stronger local search ability and fast convergence ability.

在遗传算法开始阶段，该编码算子进行整数部分和小数部分的遗传操作，使得遗传算法在早期具有很强的全局搜索能力，避免陷人局部极值；在后期进行小数部分的遗传操作，使得遗传在后期具有很强的局部搜索能力，能够很快地搜索到全局极值。

The computation of tax is carried out to the third decimal place and rounded up when the third decimal place is five (.005) or higher; and similarly rounded down if the third place is four (.004) or lower.

计算税款进行的第三次小数和围捕时第三小数5（ 0.005 ）或更高；和同样四舍五入，如果第三位的是四（ 0.004 ）或更低。

Increase Decimal Button\\015\\015Displays an additional decimal place each time you click the button.

每单击一次本按钮小数位数即增加一位。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。