The reason of currency virtualization
remember to adopt it
1. With the development of social proctive forces and social division of labor, exchange becomes more and more frequent and complicated
1. Generally accepted goods used for payment of goods and services and debt; 22. Goods that act as the medium of exchange, value, storage, price standard and deferred payment standard
3. Excess supply or demand will lead to excess demand or supply of other assets
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5. No interest is needed to be paid as the current assets of public net wealth
6, the most liquid assets related to national income, etc
references
network currency
Money is a tool used as a medium of transaction, storage value and unit of account
The history of money can be traced back to the period of barter in prehistory. Later, through the metal currency, gold and silver, paper money and gold and silver standard system, it evolved to the modern appearance However, there is no evidence that any society or economy ever traded by barter. A society without money may trade on the principle of debt or gift economy. If barter does not happen, it usually appears in a completely unfamiliar or potential enemy groupmany different cultures in the world end up with commodity currency. For example, the scheckler used by the Hebrews was originally a unit of weight, and later referred to a specific weight of barley, which belonged to commodity currency
the first use of money was in Mesopotamia 3000 years ago. Shellfish were used in America, Asia, Africa and Australia, usually with precious shells. According to Herodotus, Lydia were the first people to use gold and silver coins in the West. Many scholars believe that the earliest coins appeared in 650-600 BC
the commodity currency of some cultures has graally become a substitute currency. Gold or silver merchants or banks will provide receipts for the deposited commodity currency, and can exchange the commodity currency according to the receipts. Finally, receipt can replace commodity currency and become a widely accepted method of payment, and finally become currency
extended data:
functions of currency:
1. As the medium of transaction, currency can be used to complete transaction without barter. Its main feature is that in the sale of goods, the transfer of goods and the transfer of money are completed at the same time. Generally speaking, it is one-hand payment and one-hand delivery
Therefore, from the perspective of value movement, when money performs the function of circulation means, the movement of value is bidirectional at the same time. That is, the seller transfers the use value while getting the value, and the buyer obtains the use value while transferring the value When money is used as a means of circulation, it is called currency Second, unit of account is the direct embodiment of money as social labor. As a kind of commodity, money itself can be compared with other commodities according to its own standard. At this time, the form of value of commodities is transformed into the form of price, and the form of value of commodities expressed through money is pricewhen money performs the function of value measure, money only needs to exist in imaginary or conceptual form, but its unit must depend on the currency circulating in reality. It is precisely because of the value scale function of money that people can first convert different forms of goods into the price form of money, and then exchange with other goods
Third, the standard of deferred payment. In credit sale and purchase, money is used to repay debts. When debt is measured in currency, its value will be reced by inflation and devaluation. Therefore, the function of deferred payment needs to be separated from the above three functionsIn the computer cluster, many small servers are being replaced by a large server to increase the utilization of hardware resources (such as CPU). Although the hardware is being integrated, the typical operating system is still independent. Instead, each operating system running on a separate server is transferred to a virtual machine. Large servers can "host" many of these "client" virtual machines. This is the physical to virtual (P2V) conversion
virtual machine can be controlled and checked from outside more easily than real machine, and can be configured more flexibly. This is particularly useful in the teaching of kernel development and operating system
there is no need to purchase hardware in advance to create a new virtual machine. At the same time, a new virtual machine can be easily transferred from one computer to another. For example, a salesman can a virtual machine containing a trial version of the software to his laptop to visit his customers without changing the computer. Similarly, the failure in the virtual machine will not damage the host, so it will not cause the operating system on the notebook to crash
virtual machines can be used for long-distance disaster recovery solutions because they can be easily migrated
there are many solutions for platform virtualization
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extended materials
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