The central bank said it would not issue digital currency

1.

The implementation of digital currency is one of the main goals of the central bank in the future. At present, digital currency has been experimented in Suzhou, Shenzhen, xiong'an and other regions. If there are no major problems in the pilot, the pilot scope will be further expanded next year until digital currency is popularized in the whole country

digital currency is a means of payment for ordinary people, but it is convenient and safe for currency exchange between countries. For business transactions between companies, the supervision of funds is more effective and timely, which can effectively rece the flow of illegal funds and transfer. Generally speaking, the comprehensive use of digital currency is the general trend, and it is a new application scenario of legal tender in the era of mobile Internet

2. The Chinese version of CBDC is described as digital RMB, which is issued by the people's Bank of China, operated by designated operators and exchanged to the public. It is based on the generalized account system, supports the loose coupling function of bank accounts, is equivalent to banknotes and coins, and has value characteristics and legal compensation
what we call DC / EP is the Chinese version of the central bank's digital currency, translated as "digital currency and electronic payment instruments"
the center for International Settlements (BIS) and the Committee on payment and market infrastructure (CPMI), two authoritative international organizations, jointly concted two questionnaires on more than 60 central banks in 2018 and 2019. The content of the questionnaire includes the work progress of central banks on digital currency, the motivation of studying digital currency and the possibility of issuing digital currency. 70% of central banks said they are (or will be) involved in the research of digital currency
response time: October 13, 2020. Please refer to the official website of Ping An Bank for the latest business changes

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3. There is no established timetable for digital currency
Zhou Xiaochuan pointed out that as legal tender, digital currency must be issued by the central bank. The issue, circulation and transaction of digital currency should follow the idea of integration of traditional currency and digital currency, and implement the same principle of management. That is to say, q-coin and the like are definitely not good
as for whether to use blockchain technology to create digital currency. Zhou Xiaochuan said that the blockchain technology is an optional technology, but so far, the blockchain still occupies too many resources. Whether it is computing resources or storage resources, it can't cope with the current transaction scale, and whether it can be solved in the future depends on it. Zhou Xiaochuan said that in addition to blockchain technology, the digital currency research team of the people's Bank of China has also concted in-depth research on other related technologies involved in digital currency, such as mobile payment, trusted and controllable cloud computing, cryptographic algorithm, security chip, etc
in addition, Zhou Xiaochuan also mentioned that there is a lot of discussion about "51% attack" (assuming that indivials have 51% of the computing speed of the whole network, they can realize double payment, reverse transactions, paralyze the whole network, and completely lose the transfer function). More specifically, compared with the special currency, bitcoin does not need the central bank. Zhou Xiaochuan mentioned that for the digital currency controlled by the central bank, a series of technical means, mechanism design and laws and regulations will be adopted to ensure the security of the digital currency operation system, which is different from the design idea of bitcoin from the beginning
as for the digital currency timetable, Zhou Xiaochuan said that there is no established timetable. The relationship between digital currency and cash will be parallel and graally replaced for quite a long time. For reference.

4. CBDC, the full name of central bank digital currencies, translated as the central bank digital currency
in its Research Report on CBDC, the Bank of England defines central bank digital currency as an electronic form of central bank currency, which can be used by households and businesses to make payments and store value
the Chinese version of CBDC is described as a controllable anonymous payment tool, which is issued by the people's Bank of China, operated by designated operating institutions and exchanged to the public, based on the generalized account system, supports the loose coupling function of bank accounts, is equivalent to banknotes and coins, and has value characteristics and legal compensation
what we call DC / EP is the Chinese version of the central bank's digital currency, translated as "digital currency and electronic payment instruments"
response time: October 27, 2020. Please refer to the official website of Ping An Bank for the latest business changes

[Ping An Bank I know] want to know more? Come and see "Ping An Bank I know" ~

https://b.pingan.com.cn/paim/iknow/index.html

5. PPP is not a digital currency issued by the central bank. At present, China's central bank has not issued and approved the digital currency of issuers and investors. However, at the beginning of the year, the central bank held a seminar on digital currency, at which it made it clear that it was necessary to issue digital currency as soon as possible. The central bank put the issue of digital currency on the agenda. However, so far, the central bank has not issued any digital currency, and Zhou Xiaochuan, the governor of the central bank, said that the actual issue of digital currency is not mature. Moreover, the digital currency issued by the central bank is different from bitcoin, Ruitai, Laite and other digital cryptocurrencies. The digital currency issued by the central bank is not decentralized.

6.

f=N μ N is the positive pressure, that is, the pressure acting on the contact surface, μ It is the dynamic friction coefficient, which refers to the influence factors of the roughness of the contact surface on the friction. Or use the balance f = f; It's only used when it's stationary or moving in a straight line at a constant speed, but it's the most used in junior high school

the so-called friction is the force that hinders the relative motion of the object, and the direction of friction is opposite to the motion direction or relative motion direction of the object. The conditions of friction are as follows:

(1) two objects must contact each other

(2) there was extrusion between two objects

(3) there is a tendency of motion or relative motion between two objects

If an object is stationary on a horizontal plane, it will not be affected by friction if it is not pushed or pulled. If thrust or pull is received, it belongs to the category of static friction. The size of friction is equal to that of pull or thrust, and has nothing to do with the gravity or pressure of the object. Only the maximum static friction is related to the pressure or gravity on the object

if the object is not pushed by 10N force, the object will be subjected to static friction, which is equal to the thrust. Just push with 15N force, and the friction force on the object is the maximum static friction force. If the thrust force is increased later, the friction force will not change. Theoretically, the sliding friction of objects is less than the maximum static friction, but it is generally considered that they are equal

The friction force is f = 15-10 = 5N

extended data:

methods to increase beneficial friction

(1) increase the roughness of contact surface

(2) increase the pressure

(3) change rolling friction into sliding friction

(1) replace sliding friction with rolling friction

(2) make the contact surface separate [form a layer of air cushion or magnetic suspension on the contact surface of the object]

(3) decrease the pressure

(4) rece the roughness of the contact surface

In engineering technology, people often rece friction by applying lubricating oil. The science of this problem is called tribology, which is a branch of mechanical manufacturing

If two objects, which are in contact with each other and squeeze each other, but relatively still, only have a relative sliding trend under the action of external force, but do not have relative sliding, then the force between their contact surfaces hindering relative sliding is called "static friction". When the static friction increases to the maximum, the object will move

size: the static friction varies according to the external force, but there is a maximum value, which is called the maximum static friction. The maximum static friction is slightly greater than the sliding friction

direction: tangent to the contact surface, opposite to the direction of relative motion trend

On the basis of a large number of experiments, G. amunton and C. - A. de Coulomb proposed the following law of friction in 1699 and 1781:

① the friction between two objects in contact does not exceed a certain maximum value, which has nothing to do with the size of the contact area

(2) the maximum value of friction is proportional to the normal pressure n between two objects

(3) the direction of friction is opposite to the sliding direction of the object, and its magnitude is directly proportional to the normal pressure n between the two objects

the above conclusion is only a rough empirical rule, but because it was found in the early days of mechanical science, it was called the law of friction, also known as Coulomb's law

7. No matter what device, there is no way to download to the apple computer, because the computer is the actual physical existence, and can not be downloaded through the network.