How can we use a decimal system if we don't have ten fingers?

On the evening of April October 14, 2014

Zhi Hu saw a problem, a communications doctor replied: "Not necessarily in decimal format, but it must be in decimal format ". after reading it for a long time, I didn't understand it until a friend reminded me: "binary 2 is 10, and triplicate 3 is 10 ,......, 10 is 10 ,....... I suddenly realized that what I used to know was binary and decimal, and I did not go into the mysteries. Today, it's a little bit easier to read books for ten years. In my mind, I think it's good. I don't know how to implement it. I think it's not. I think it's a lack of character to be good at discovering goals. I was not active enough, I was willing to be passive, and I wanted to change my personality. I was born yesterday and now I am 23 years old. I have not come out independently. I hope I don't forget my interview experience from the last month to date. I can see my shortcomings and why. I think it's time to think about it. It's time to be serious. I used to say that I felt guilty when I used my parents' money and didn't use my mind to learn it. Now I am at work, if I earn money to support myself, should I put all my energy into my work? Should I strive to find a better company, work better, and earn more money. I am in a very bad status, nervous for no reason, with no facial expression. I lost my hair a few months ago and it is almost bald now. People are ugly, short, full of silk, short and poor. So should I keep feeling inferior like this? The reason for my inferiority is that I have no self-confidence. The reason for my lack of self-confidence is that I have not worked hard and I am too lazy. If you are willing to live in this way, always at the bottom, always in poverty, and never before, then you will be so lazy. I haven't written down my own text records for a long time. I hope today is a new beginning. I don't have to remember it every day, but at least I have to remind myself that if I feel it, I will write it down, when you have no fighting spirit, you can see what you thought. A good memory is worse than a bad pen.

How can we use a decimal system if we don't have ten fingers?