42.How did hex come from

42.How did hex come from?
Why are there so many bases when people use numbers?
The most commonly used system is the decimal system. It's easy to understand. Two palms and exactly ten fingers are stretched out. It's easy for the ancients to think of the decimal system.
But there is also a common decimal system. How did it come about? Mr. Liu run said that if you stretch out your right hand and count the remaining four knuckles with your thumb, you will find exactly 12 knuckles, so the dodecal system is actually a very good one handed counting method.
There is also a kind of hex system which is very common. How did it come from? Liu run said that it evolved on the basis of the dodecal system.
You see, the dodecal system uses one hand. There is another hand. It has exactly five fingers. After counting one twelve, the other hand bends one finger to count. When five fingers are used up, it is exactly the sixties. You see, even things as abstract as mathematics are born in application scenarios after all.
六十进制是怎么来的？
为什么人类使用数字的时候，会有那么多种进制呢？
最常用的是十进制，这好理解，伸出两只手掌，正好十个手指嘛，古人很容易想到十进制。
但是还有一种常见的十二进制，这是怎么来的呢？刘润老师说，你伸出右手，用大拇指去数剩下四根手指的骨节，你会发现正好十二个，所以十二进制其实是非常好的单手计数法。
那还有一种六十进制也很常见，这又是怎么来的呢？刘润老师说，这是在十二进制基础上演化出来的。
你看，十二进制用的是单手，那还有另外一只手啊，正好五个手指，每数完一个十二，另一只手弯曲一根手指计个数，五个手指用完，正好是六十进制。你看，哪怕是像数学这么抽象的东西，说到底也是生在应用场景中的啊。
重点词汇
decimal system 十进制
come about 产生 ; 发生
stretch out 平躺 ; 躺直 ; 伸出，伸开
right hand 右手
very good 最好
a kind of 表示不确定
come from 来自某处 ; 出生于 ; 出身于
on the basis of 在…基础上
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