Cash currency in digital form refers to

1.

E-cash, like paper money, has no value in itself. It only depends on the credit of the issuer to reflect its value. It is a kind of digital information composed of 0 and 1 signed by the bank through electronic means, so it is also called digital currency. It is different from the credit card used now, because the credit card itself is not money, it is just a means of transfer, and e-cash itself is a kind of money, it can be directly used to buy goods. Although it is the same as gold coin and paper money, it does not need physical entity like them. Instead, it can make electronic payment only through data exchange to realize the function of cash. E-cash has the following characteristics:

one is the rapidity of mobile. It can send cash to distant places instantaneously through the network, so it has extremely fast mobility. Because it is a kind of digital information, like the usual data, it can be put in the computer and transmitted by the network. Moreover, it can be sent directly to the store terminal by the consumer terminal, so there is no need to pay the service charge to the intermediate settlement institution. However, because it can transfer large amounts of money to distant places instantaneously, it also increases the monitoring difficulty of financial management institutions, and also causes tax, legal, exchange rate instability and other problems

The other is the anonymity of payment (i.e. it is impossible to know who originally owned the money). Using cash can also achieve anonymity, but it is difficult to achieve it when using electronic settlement services (such as credit card). With the electronization of various social systems, there is a tendency to automatically collect personal secret information. Payment behavior is often the source of all kinds of personal secret information. Therefore, the use of e-cash will be an effective means of self-defense in the future computer society. However, the anonymity of e-cash will also provide the convenience of money laundering for money of unknown origin, so we should try to prevent it

The third is to improve the safety. Because the security measures it adopts are far more perfect than the current credit card, much safer than checking accounts and savings accounts, and will not be stolen or robbed like banknotes and coins

Fourthly, it can save cost. Banknotes need to be printed, transported, preserved, counted, anti-counterfeited and secured, which requires a lot of expenses. It is reported that the annual cost of transporting tangible currency in the United States is as high as US $6 billion, and that in the United Kingdom is as high as 200 million pounds. The cost of money settlement and transportation between the world bank system accounts for 5% of its total management fee. All these expenses can be saved when using e-cash

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.

E-cash is a technology to simulate cash in electronic form

e-wallet is a common payment tool in e-commerce shopping activities. Electronic money stored in electronic wallet, such as electronic cash, electronic change, electronic credit card, etc

First, e-cash overview:

e-commerce is a business activity carried out through the Internet. A key requirement for e-commerce is to have a safe and efficient e-cash system. Since D. Chaum published his first paper on e-cash system in 1882, he has made a lot of achievements in the research of e-cash system

Second, e-wallet overview:

e-wallet has two concepts: one is pure software, which is mainly used for online consumption and account management. This kind of software is usually connected with bank account or bank card account. The second is the smart stored value card of small amount payment. The cardholder deposits a certain amount in the card in advance, and directly dects the transaction amount from the stored value account ring the transaction

extended data:

I. characteristics of e-cash:

1. There should be agreement and authorization relationship between banks and businesses

2. Users, businesses and e-cash banks all need to use e-cash software

E-cash bank is responsible for the transfer of funds between users and businesses

4. E-cash is anonymous to users, and the use of e-cash consumption can protect users' information

Second, the characteristics of e-wallet

1. Security: the personal data of e-wallet users are stored in the server, and the security is ensured by technical means. No personal data is stored on the personal computer, so as to avoid the risk of data leakage

2. Self: after successfully applying for wallet, consumers have their own files on the server. When they travel or go on business, they can pay online without carrying the E-wallet information

3. Convenience: the E-wallet has many merchant site links, through which consumers can directly enter the merchant site for shopping

4. Fast: it only takes 10-20 seconds to complete the normal processing of a payment instruction through the electronic wallet (depending on the network and communication)

4. The reason is that there are too many Android background self starting software
it is recommended to download some optimization tools to optimize the system

5. Take a taxi to Chengzhan railway station and take the high-speed railway to Tongxiang
the latest plan is to change g7436 to Haining West for d5560 g7436 and drive in Hangzhou at 21:27
after getting off the bus, take Tongxiang bus K284 to Tongxiang City, and then take a taxi to Wuzhen

take a direct taxi of 110km Road 300, it is estimated that people are not willing to

6. 1. Hangzhou east station to buy high-speed rail or EMU tickets, take Tongxiang get off, more than 20 minutes, Tongxiang get off, take K282 bus to Wuzhen passenger station, out of Tongxiang station, you can see the bus station. After arriving at Wuzhen passenger station, take k350 to dongzha or xizha. 2. In Hangzhou east subway station, take the subway to the "passenger transport center" station. There are buses to Wuzhen passenger transport center. There are more than 30 times a day. It takes more than an hour to get to Wuzhen passenger transport center. Then take k350 to east gate or west gate. The two methods are almost the same in terms of time. It takes nearly two hours
Wuzhen: first take the train to the south of Hangzhou, then take the bullet train to Tongxiang railway station for 30 minutes, and then take K282 at the gate of Tongxiang railway station for about half an hour to get to Wuzhen. Wuzhen is an ancient town, not many places to play, but the scenery is very beautiful. There are contradictory former residences and typical Jiangnan ancient buildings. The house is very old, there are many bridges and the river is very long, There are a lot of beauties in the south of the Yangtze River... The ticket to dongzha in Wuzhen is 100, the ticket to xizha in the daytime is 120, the ticket to xizha in the evening is 80, and the ticket to xizha is 150. I feel that dongzha is relatively small. The ticket of 100 yuan is not very worthwhile. Xizha is very big and beautiful. After watching both sides, I feel that dongzha and xizha are all the same... All the same houses... So if you want to be more economical, just go to see the night view of xizha. It's good and cheap All the spots are in dongzha and xizha scenic spots. If you buy a big ticket, you don't need to buy a scenic spot ticket... Now dongzha can't escape. There are security guards who strictly control it. If you catch it, you will be warned and fined. Dongzha is cleared in the morning to prevent tourists from sleeping there at night or sneaking in before opening the door. There can be no similar situation in xizha. I feel that although xizha belongs to the later transformation of Tourism Bureau, it is clean and fun. Dongzha is a bit old and messy. Just spend a morning or afternoon visiting all the scenic spots there. That is to say, the route is to play dongzha in the daytime and watch xizha in the evening. A joint ticket is 150 yuan for Wuzhen accommodation. If it is recommended, you can go to Sina blog to see a Wuzhen resident named Lao Zhang in xizha, My reputation is good. It's just outside xizha scenic area, but it's not near the water. In fact, the people near the water are just like that. At least they can't see clearly in the dark at night. Uncle xizha Zhang of Wuzhen, you should find out his contact information or something... The big bed room I went to live in at the end of June is very clean, the environment is good, and living in xizha scenic area is also very good, but the price is too expensive, The average water front room is more than 600, and the standard double room is estimated to be more than 1000, The B & B in the scenic area are all unified by the tourism company, only one room reservation telephone price is the same, if you eat, there is no famous snack in the local area... But stinky tofu, muffin, hand made new year cake, lotus leaf steamed pork with flour taste is OK ~ and I bought the glutinous rice mpling made by an old lady on the street, which is very delicious! Anyway, it's a little expensive to eat in the scenic area. Ha ha, it's fun to play in xizha, but the price of the things inside is not cheap, A little commercialized, huh, Wuzhen, basically 1 to two days is enough. And Nan Street can go to visit without tickets. And the old street has some mixed gadgets. The price is not expensive. The quality is general. It's worth washing out the Wuzhen specialty. It's three Baijiu, blue print, sister-in-law cake. Hangzhou Baiju three Baijiu is a Baijiu, I bought two altar back, the old man said that the taste is not as good as Moutai's sister-in-law cake bought a box of flavor can also be a little greasy, too sweet. Hangzhou chrysanthemum tea tastes good taste basically on these experiences. Don't forget to give me points ah ~ note: 1, before you travel, please bring the original valid documents (identity card, passport, etc.) And check whether it has expired. 2. It's best to take a towel, toiletries, hotel is disposable, but the towel is recycled. Although it's all disinfected now, for the sake of cleanliness, I'd better take a towel with me. Also remember to take an umbrella in case of rain. 3. If you want to take a non metered taxi locally, be sure to ask about the price. 4. No matter where you go shopping, please keep in mind that things inside or around the scenic area are much more expensive than those outside.

7.

I only know that we have a Datong mining machinery in Boshan. It seems that the quality is OK. It's a famous trademark of Shandong Province, and the scale of the factory is OK. The Datong pump seems not to be the same place as this factory. The registered trademark of Datong mining machinery I mentioned is Wulong brand. I don't want to comment on the procts I don't know. I hope that the owner will have time to visit Boshan, Boshan is the name of China's pump instry, the largest pump proction base in Asia, and China's high-quality pump proction base. Boshan has three well-known trademarks of Boshan Pump Technology, Huacheng group and Shuangshan vacuum, as well as a number of Shandong famous brand procts. Boshan Pump has six provincial engineering technology research centers and enterprise technology centers, and two provincial research institutes, There are more than 30 technology development institutions, which develop hundreds of new procts and technologies on average every year; More than 20 kinds of procts have reached the international advanced level, and more than 70 kinds of procts have filled the domestic blank. Six enterprises are responsible for drafting or participating in the formulation of national and instrial standards, and 28 procts of more than 20 enterprises have been proced by international standards organization for pump procts

Boshan Pump's good regional brand image has attracted the favor of multinational pump giants. Now Ebara of Japan has set up a plant in Boshan, and Jidi group, a leading enterprise in the field of liquid ring pump, has also built the only proction base in the Asia Pacific region

8. 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??