Unit of internal test for regional link of digital currency
digital currency is an alternative currency in the form of electronic currency (which can be used for real goods and services transactions)
digital currency has the main characteristics of network packets. This kind of data packet is composed of data code and identification code. The data code is the content we need to transmit, while the identification code indicates where the data packet comes from and goes
based on the characteristics of digital currency, the direct benefit of digital currency to the central bank is not only to save the cost of note issuance, circulation and settlement, but also to enhance the central bank's ability to control funds
Electronic money and virtual money are called digital money. According to the definition of the European Central Bank, virtual money is issued by non central banks, credit institutions and e-money institutions, which can be used as the numerical expression of the value of currency substitutes in some cases{rrrrrrr}
extended information:
the process of digital currency trading through the platform is as follows:
(1) investors should register accounts first, and obtain digital currency accounts and US dollar or other foreign exchange accounts at the same time
(2) users can buy and sell digital currency with the money in their cash account, just like buying and selling stocks and futures
(3) the trading platform will sort the buying requests and selling requests according to the rules and start to match them. If they meet the requirements, the transaction will be concluded
(4) e to the difference between the buy and sell volumes submitted by users, a buy or sell request may be partially executed
The digital currency of the central bank is DCEP
the name of the digital currency developed by the central bank is DCEP (digital currency electronic payment). DC is digital currency. EP is electronic payment. Payment transmits digital things through a certain way, not paper currency. Therefore, electronic payment itself has the attribute of digital currency
The characteristics of digital currency are: low transaction cost; Fast trading speed; Highly anonymous
extended data
Application of digital currency
I. fast, economic and safe payment and settlement
cross border payment helps RMB internationalization. In 2015, the settlement volume of cross-border payment involving current account is about 8 trillion yuan. To accelerate the internationalization of RMB, cross-border payment and settlement procts and solutions with low cost, high efficiency and low risk are needed
At present, there are still a lot of repetitive human work in the bank's electronic loan process and processing process, and as the basic support of loan issuance, many of the collateral has the situation of false pricing or multiple or even no collateral. We can consider using digital currency to price and track bank collateral:3. Bill finance and supply chain finance
in recent years, various bill market businesses based on commercial bills have grown rapidly, and bill financing procts have become a hot area of Internet financing. However, about 70% of the current bill businesses in China are still paper transactions, Supply chain finance is also highly dependent on labor costs
reference materials
network digital currency
Digital RMB, issued by the people's Bank of China, is a controllable anonymous payment tool with value characteristics and legal compensation, which is operated by designated operating institutions and exchanged with the public. It is based on the generalized account system, supports the loose coupling function of bank accounts, and is equivalent to banknotes and coins
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Hello, where are the first batch of pilot cities of the central bank's digital currency? Do you think they are well deserved super first tier cities "Beijing, Shanghai, Guangzhou and Shenzhen"? I want to tell you that it's not all right. Except Shenzhen, the other three cities are Cheng, Suzhou and xiong'an new area. At present, Shenzhen is the earliest city to launch digital currency. On October 9, Shenzhen issued 10 million digital currency. 50000 people, 200 yuan per person, can enjoy the welfare, which is distributed to everyone free of charge through the way of wagging number. Here, I can only envy you. The implementation of digital currency is so fast. The friends in the pilot cities are lucky. I just want to watch you win the lottery
the first batch of pilot cities are selected in these four cities, which is the first step for digital currency to go to the whole country. When it matures in the future, it will be promoted to more pilot cities. So don't worry, just wait. Even if our city is not a pilot, it doesn't matter. Next time it will be our city. The pilot is just to test the stability of the system, and we don't have a great chance to get the red envelope of digital currency. There are so many people in Shenzhen, and only 50000 numbers are selected. Here we would like to express our support and thanks to the cities selected as the pilot cities of digital currency
so, what's the significance of this digital currency? Why do you have to work hard to do this? For most people, it really won't have any impact, but for a small number of people, it will have a great impact. This small group of people are those who engage in illegal activities
for example, if some people are corrupt and accept bribes, they specify that they can't let others put money on the bank card. That means they are directly arrested, but they can't be found with cash. If we restrict the large amount of cash consumption in the future, for example, if you have to spend more than 5000 at one time, you can't use cash, you need to use digital currency. In this way, those who have bribed tens of millions of cash in their families may not want to spend all their money in their lifetime. And their illegal income doesn't go to the society. It's just paper. They still occupy space at home. Once they start to spend money in digital currency, it's easy to find out. That is to say, all our income will be counted. Once they are involved in crimes, it's easy to be caught. At that time, there will be less Telecom fraud, This is the meaning of digital currency
F= ρ S(v*sin θ)^ 2
the formula is deced as follows:
consider the case that the wind speed is perpendicular to the action surface first
take the cross section of the wind as s and the length as S Δ x( Δ x-> 0), and the velocity before the wind contacts the action surface is v Δ x=v Δ T
the mass of the air column is Δ m= ρ S Δ x= ρ Sv Δ T
because the mass of the air column is very small, when it collides with the action surface, it will move along the action surface, that is, its velocity perpendicular to the action surface is 0 Δ t=0-(- Δ MV)
i.e. F Δ t= ρ Sv Δ t*v
F= ρ When the wind speed is not perpendicular to the action surface, the velocity is divided into the direction of the vertical action surface and the direction parallel to the action surface. Since the component parallel to the action surface will not generate force with the action surface, the final wind force is only the component perpendicular to the action surface, which is v * sin θ, Substituting this formula into (*) to get
F= ρ S(v*sin θ)^ two
if the capacity of the air bag is too small, just blow more times.
Look at the memory, the server