Well, if we actually want to represent something like the number 7, well in binary, not actually in decimal like this.

如果你表达,类似于7的数字，在二进制中，它和十进制可不太一样。

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You can either have a big number and a small decimal point or small number and a big decimal point.

可以小数点前面长，后面短,或者，前面短，后面长。

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What's the biggest number you can represent with three decimal digits? Pardon?

你们想用这3个十进制数表示什么？,请再说一遍？

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So a floating point value again is a number with a decimal point, so it depends.

一个浮点型数据就是一个,带小数点的数。

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Seventy-nine. In fact, if you add up each of these numbers, 9 you should get the decimal number 79 79 from this binary number here.

9，事实上，如果你把这些数字累加，你应该能从这些二进制中9,得到十进制数。

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So unlike an int, this is the type of number that can have numbers after a decimal place.

所以，不同于int，这个类型的数字,可以有小数位。

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If we need a 7, this is the ones column, the twos, fours, eights, so here are our columns and this was our decimal system a moment ago, and I wanna express the number 7 and the only digits 0 I now have access to are zero and one, whereas, in decimal, dec meaning 10.

如果你需要7，这是一位，二位，四位，八位，这是位数,刚才说的十进制的位数，我想表达7而且,只能采用数字1与，在十进制中，dec意思是十。

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