如何使用大脑将十六进制转换为十进制? [英] How to turn hexadecimal into decimal using brain?

问题描述

打开计算器来做这么小的事情对我来说似乎很烦人，我坚信这样说:您知道的越多越好！"所以在这里我问你如何将十六进制转换为十进制.

Opening the calculator to do such tiny stuff appears annoying to me ,and I strongly believe in ths saying "the more you know,the better!" so here I am asking you how to convert hexadecimal to decimal.

直到那一刻，我使用以下公式:

Till that moment I use the following formula:

Hex:        Decimal:
12          12+6
22          22+2*6
34          34+3*6
49          49+4*6
99          99+9*6

以更高的数字(例如C0或FB)前进时，我会感到困惑

I get confused when I move on at higher numbers like C0 or FB

您正在使用的公式(大脑，不是函数)是什么?

What is the formula(brain,not functional) that you're using?

推荐答案

如果您认为十六进制为16，则实际上很简单:

If you consider that hexadecimal is base 16, its actually quite easy:

从最低有效数字开始，朝最高有效数字(从右到左)工作，然后将数字乘以16的幂，然后将结果相加.

Start from the least significant digit and work towards the most significant (right to left) and multiply the digit with increasing powers of 16, then sum the result.

例如:

0x12 = 2 +(1 * 16) = 18

0x12 = 2 + (1 * 16) = 18

0x99 = 9 +(9 * 16) = 153

0x99 = 9 + (9 * 16) = 153

然后，请记住A = 10，B = 11，C = 12，D = 13，E = 14和F = 15

Then, remember that A = 10, B = 11, C = 12, D = 13, E = 14 and F = 15

所以

0xFB = 11 +(15 * 16) = 251

0xFB = 11 + (15 * 16) = 251

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