1. The world's first
digital currency was invented and issued by David Chaum, known as the father of digital currency. As a mathematician, cryptographer and computer expert, he began to study how to make digital currency in the late 1970s. Digital currency is a kind of currency existing in the form of electronic number, which is an electronic flow of information transmitted on the network through the circuit composed of 0 and 1. Compared with the traditional real currency, i.e. paper money and coins, digital currency has obvious advantages: traditional currency has greater storage risk, expensive transportation costs, and requires a lot of investment in security and anti-counterfeiting. Digital currency is different from e-currency such as credit card and e-check. It has higher level and higher technology content. It can be used without connecting to the bank network and is very convenient for customers. By the end of 1995, as more and more users of the digital currency invented by JOM, it was accepted by a bank called Mark Twain, enabling it to convert to the real deposits in the user's account
network
virtual currency can be roughly divided into
the first category is familiar game currency. In the era of stand-alone games, the protagonist accumulates money by knocking down the enemy, entering the gambling house to win money, and using these to buy Herbs and equipment, but it can only be used in his own game console. At that time, there was no "market" between players. Since the establishment of Internet portal and community, the realization of game networking, virtual currency has a "financial market", players can trade game currency
the second type is the special currency issued by the portal website or instant messaging service provider, which is used to purchase the services in the website. The most widely used is Tencent's q-coin, which can be used to purchase membership, QQ show and other value-added services
the third kind of virtual currency on the Internet, such as
bitcoin (BTC), Wright currency (LTC), etc. bitcoin is an electronic currency proced by open-source P2P software. Some people also translate bitcoin as "bitcoin", which is a kind of network virtual currency. It is mainly used for Internet financial investment, and can also be directly used in daily life as a new currency.
2. The schele of services for students will be revised ring the summer vacation. The canteen under arrangement, the weekly movie and the change of band time will be posted on the wall of the student club every Wednesday
ring the summer vacation, buses to the town center will leave the hall at half an hour every day. The canteen will provide three meals a day from 7 a.m. to 7 p.m. on weekdays and two meals from noon to 7 p.m. on weekends Students, you may have the wrong number about the canteen time in this place. Please check it yourself.) the library will keep the usual work and rest time ring the working days of each week, but the working hours on Saturdays and Sundays will be shortened. The weekend work and rest time is from noon to 5 p.m
all students who want to use the library borrowing service must have a new summer card
the notice will also be published in the student newspaper next week.
3. Digital money
network digital money; E-money
example:
1. A digital money system based on the partially blind signatures
a digital money system based on partially blind signatures
2; D go so far as to say that truly digital money or, more accurately, the economic mechanisms needed for truly digital cash will rewire the nature of our economy, communications, and knowledge The nature of communication and knowledge.
4. "Next year, China's e-commerce will usher in a period of rapid development." Ma Yun, President of Alibaba, an e-commerce intermediary service website, believes that the development of China's Internet market has gone through different stages, from the competition for advertising market, to the competition for short message market, and then to the competition for game market. In the near future, it will soon enter the competition for e-commerce market. As early as the 1990s, when the Internet application was just rising, many Internet enterprises had heated up the concept of e-commerce. However, e to the lack of credit certification, the imperfect logistics system, and the difficulty in realizing online capital transactions, the e-commerce vigorously promoted by Internet enterprises failed to arouse the interest of traditional Chinese enterprises, and e-commerce has been silent for many years in China. Recently, the reporter found in the interview that with the recovery and development of China's Internet instry, more and more Internet enterprises began to target their profits to traditional enterprise users again, and e-commerce has become the focus of the instry again under the vigorous promotion of Internet enterprises. However, in the face of a new round of e-commerce boom in the Internet instry, domestic traditional enterprise users still maintain a cautious attitude. E-commerce boom again, for the future development of e-commerce in China, many Internet enterprises are very optimistic. Last week, eBay reported its second quarter results“ Our trading volume in the second quarter of this year reached 500 million yuan, an increase of 28% over the previous quarter; The number of new procts reached 4.2 million, an increase of 35% over the previous quarter; There are 1.4 million new users. " Zheng Xigui, chief financial officer of ebay.com, told reporters that it is not difficult to see from these figures that the development of e-commerce in China is very rapid. He believes that China's e-commerce users account for only 6.6% of the total number of Internet users, while the proportion of the United States, South Korea and other countries has reached 30%. Therefore, China's e-commerce will have great development space in the future“ We have concted a survey and found that 96.4% of enterprise managers have access to the Internet, which is a high rate and an important foundation for developing e-commerce business. " Huang Haixin, chief information officer of huicong.com, also believes that with the development of the Internet instry, China's e-commerce will enter a period of rapid development in recent years. According to Huang Haixin, there will be two important signs in this period. One is the rapid growth of traditional enterprises engaged in e-commerce; the other is the increase of Internet companies providing intermediary services for these enterprises, and they will be able to make profits from the services. According to the survey of Alibaba, one fourth of China's 10 million small and medium-sized enterprises have begun to try and skillfully use e-commerce tools; Among China's 87 million Internet users, more than 6 million have started online transactions. These are the basis of the development of e-commerce. People concerned predict that with the growth of a new generation in China, China will surpass the United States as the market with the largest number of Internet users by 2005, which also shows that enterprises engaged in e-commerce will probably usher in a peak of rapid development next year. It is based on the optimistic forecast of the recent development of e-commerce that many Internet enterprises are launching a new round of competition around the enterprise user market. Not long ago, 3721 and China search respectively launched large-scale promotion activities of national network marketing program to promote their own network marketing concepts and solutions to enterprise users. At the beginning of this year, huicong.com, a consulting website, launched an e-commerce trading information platform and announced that it would run free within a year, aiming at Alibaba, a pioneer in this field. In the field of search, 8848 returns to the field of e-commerce relying on the commodity search service. Not long ago, China search and zhongshang.com launched similar commodity search services. In addition, Yahoo and the Internet are also competing in China's search market. Although the search business of both sides is free at present, the instry still thinks that this is the competitive strategy adopted by both sides for charging. The second revolution reshapes the concept of e-commerce: "the e-commerce of domestic enterprises can not be regarded as the real e-commerce." A person in the instry introced to the reporter that the symbol of international e-commerce is that the enterprise finally completes the capital transaction on the Internet. At present, the domestic e-commerce intermediary enterprises only provide information services and do not help the enterprise complete the final transaction, so it can not be regarded as the real e-commerce. However, this initial understanding of e-commerce has changed in China's Internet instry. Huang Haixin believes that the traditional definition of e-commerce is undergoing great changes in China, and the extension of the concept of e-commerce is graally widening. Online advertising, search ranking service and e-commerce information platform should be regarded as a part of e-commerce. The success of Google and the overall profitability of Yahoo's search business show the real demand direction of traditional instries. And enterprise users complete all transactions online, including capital transactions, is only a form of e-commerce. At present, the relevant domestic laws and regulations are not perfect, such as the electronic signature does not have the same legal status as the written signature, so it is difficult for the electronic contract to take effect. At the same time, traditional enterprises do not have a clear understanding of e-commerce and lack a sense of trust in online transactions. Therefore, online transaction has not been realized in China's e-commerce. On the contrary, information service can be accepted by traditional instries. In addition, the traditional division of B2B (business to business), B2C (business to indivial) and C2C (indivial to indivial) e-commerce is also changing. According to Shao Yibo, President of ebay.com, many people regard eBay as a C2C e-commerce website, but actually they don't think so within the company. At present, many small and medium-sized enterprises trade goods on eBay, which is actually a B2C business model; The famous C2C e-commerce website in the United States, eBay, has also launched B2B service business. Traditional instries are still waiting to see. Although the Internet instry is optimistic about the future of e-commerce, the traditional instries are still in the process of evaluating how much benefit e-commerce can bring to enterprises, I have different views on the development of China's e-commerce from that of the Internet instry http://publishblog.blogchina.com/blog/tb.b?diaryID=3801459
for adoption
5. The central sentence of the poem "Dian Hai Qu (its ten)" is: the weather is often like February or March, and the flowers and branches are constantly in spring. It praises the natural scenery of Dianchi Lake in Kunming. Dianchi Lake is the largest freshwater lake in Yunnan Province, known as the "Pearl of the plateau";
6. Hello, I went to a certain east look, found that there is no this power supply, has been off the shelf. But from the search information, this power seems to be good. It's not like the low-end red police being criticized... Do you want SLI or CF??
7. The prospect of digital cash is obviously very attractive, but there are always some difficulties in technology or practical application, which make it unable to be popularized in a large area in a short time. At present, digital cash can be issued by indivials or businesses across national boundaries and away from the banking network, which will seriously infringe a country's currency issuing sovereignty and the integrity of currency formulation. Assuming that digital cash is widely used without central bank regulation, the role of money will decline; If the relevant loans are not subject to the minimum reserve requirements of banks, the scale of new credit may also expand; At the same time, if digital cash flows into a country too much, it will rece or even fail the activity space of macro monetary control mechanism, which will greatly impact the money market of a country
for consumers using digital cash, there should be corresponding legal provisions to protect them, to ensure that they are not easy to be cheated, defrauded or wrongly implicated in a fraulent transaction, and they should be protected from eavesdroppers and forgers
the other is that law enforcement officers are worried that if anonymous digital cash is widely used, it may greatly hinder them from dealing with such issues as money laundering, drug smuggling and terrorism. They are also worried that a large number of digital cash will be transferred through the Internet, which will make the transfer channels more complicated. In addition, digital tax evasion is a serious problem
in order to ensure financial and social stability, the state should formulate corresponding laws and policies to prevent these problems, such as the combination of digital cash and the current settlement system, but the corresponding legislation is still in the research stage, which is one of the main reasons why digital cash has not been popularized. Because of the characteristics of digital cash, digital cash should not be reused. Although it is stored in computer system and smart card, it can not be reused by users; On the other hand, digital cash should be fast and effective in use; More importantly, the system using digital cash must enable users to have confidence in the use process, and be sure that the system can be used normally no matter how the system accessories fail or how the system is carried
in terms of security, digital cash should be difficult to forge or counterfeit, including preventing or identifying replication mechanisms
although there are some difficulties in law and technology, in the long run, e to the progress of science and technology, digital cash is the inevitable trend of monetary development
8. It is the so-called "one hundred years of cultivation leads to the same boat crossing, and one thousand years of cultivation leads to the same pillow sleeping". It is a great fate to be a husband and wife. Just imagine how likely it is for a pair of strange men and women to get to know each other, let alone get to know each other, fall in love, fall in love and even get married
Therefore, to be a couple, we should cherish this relationship. The most important thing between husband and wife is considerate, sincere and trust, of which trust is the most important. The trust between husband and wife is just like the two wings of marriage. Only by synchronous cooperation can the marriage last longer
no one or anything can break up the two people who really love each other, except the husband and wife themselves. If there is no trust, marriage will be full of suspicion. If there is suspicion and doubt, love will lead to hatred and even tragedy
the investigators extracted the DNA of Meng Nan, the eldest daughter of Zhu Dapeng. According to the identification, it was proved that the eldest daughter was born to Zhu Dapeng. When he learned of the result, Zhu Dapeng shook his head and refused to accept the fact that the identification result was forged
ZHU Dapeng always thinks that he is right and his actions are reasonable, so he didn't forgive his father until he died. On February 1, 2008, Zhu Dapeng was executed and got the punishment he deserved
In the face of such a tragedy, it is useless to accuse Zhu Dapeng of cruelty. We should think deeply about what led Zhu Dapeng to commit a crime and become a vicious murderer No one is born a murderer. In the final analysis, Zhu Dapeng's evil behavior is that he suffered injustice in his childhood and his parents preferred his younger brother, which made him have defects in character and planted seeds of hatred in his heart
once he was suspicious, he amplified the suspicion, firmly believed that his father had done something wrong to him, and then went on the road of killing. Therefore, the influence of the original family on children should arouse everyone's attention. Mental health is as important as physical health
