5500 computing power

1.

bitcoin is a kind of network virtual currency. Bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system. Assuming that the mining computing power is 100 mhash / s and the total computing power is 4000 ghash / s per day, 3600 bitcoins can be g out every 24 hours

China's computing power has accounted for more than 75% of the world, that is to say, 75% of bitcoin in the world is made in China. How long does it take to dig a bitcoin

bitcoin used to be very good at "digging", which can be done by ordinary computer CPU, and it can automatically "solve problems" by downloading software. But with the rise of currency price, more and more people want to "solve the problem", and the difficulty of mining is also increasing. Now, the amount of computation needed to dig a bitcoin is beyond the reach of ordinary people. Ordinary computers can't afford it

instry insiders said that in 2014, 100 bitcoins were generated from 500000 yuan of electricity charge per day, and the cost of electricity charge alone was 5000 yuan per coin. But now, the same cost has more than doubled, and the electricity cost of each bitcoin is as high as 10000 yuan

in the generation mechanism of bitcoin, mining reward is decreasing. At the beginning of the birth of bitcoin, the miners could get 50 bitcoins for each page of the ledger, and then 25 bitcoins for each page of the ledger, decreasing in turn. It's like digging gold. At first, it's more and less. The time point at which each new reward is reced by half is called half bitcoin proction

assuming that the mining computing power is 100 mhash / s, the total computing power is 4000 ghash / s per day in 2014, and 3600 bitcoins are g out every 24 hours

now, we can understand the difficulty of bitcoin digging in this way, which is equivalent to 100 million dice throwing numbers less than 100 million and 50 million. Whoever throws them first will get the bookkeeping right. At this point, 1050 million is a hash value. The process of throwing dice is called hash collision. The unit of mining power is the number of hash collisions per second

at present, the computing power of bitcoin in the whole network has reached 2.36 billion hash collisions per second, which is equivalent to the number of water droplets in more than 200000 50 meter long standard swimming pools. But even with such a large amount of computing power, it will take about 10 minutes to hit a hash value that meets the requirements

in 2012, bitcoin's output was halved for the first time, and in July 2016, bitcoin's output was halved for the second time. At present, 12.5 bitcoins are awarded for recording one page of account book. The next halving will take place around 2020, and the total number of bitcoins will not increase by 2040, with a total of 21 million

Related videos: how long does it take to dig a bitcoin

2.

Hard disk is one of the main storage media of computer, which is composed of one or more aluminum or glass discs. The disk is covered with ferromagnetic material

the hard disk includes solid state hard disk (SSD disk, new hard disk includes SATA solid state, m.2 solid state, PCI-E solid state, and m.2 solid state has nvme m.2 and SATA m.2), mechanical hard disk (HDD traditional hard disk has 3.5 inch, 2.5 inch, 5400 rpm and 7200 RPM)

3.

To build a al prevention mechanism is to file and record the safety risks one by one, adopt a al preventive working mechanism of risk classification control and hidden danger investigation and treatment, effectively solve the prominent problems in the field of safety proction that are "not clear and unexpected", and emphasize that the gateway of safety proction should be moved forward, from hidden danger investigation and treatment to safety risk management and control. It is necessary to strengthen risk management and control methods and means, grasp the key links of the whole chain of accidents and take effective preventive measures to prevent the potential accidents caused by inadequate safety risk management and control, and the potential accidents not found and managed in time

the game is the software of double control system for security -- "security eye" -- according to the international advanced security management theory and method, combined with the characteristics of China's security supervision and the level of enterprise security management, with the help of Internet, mobile communication, Internet of things, cloud service and big data technology, based on the systematic security consulting scheme, aiming at the characteristics of enterprise security risk, Docking with the proction and operation, it precisely solves the most challenging safety management problems such as the implementation of safety proction system, staff safety training and ecation, real-time monitoring of safety proction risk and scientific decision-making, realizes the revolutionary breakthrough of safety management, and provides professional, convenient and effective quantitative solutions for safety management for enterprises

4. Bitcoin is a kind of digital currency proced by open source P2P software[ 1] Bitcoin has also been paraphrased as "bitgold"[ 2] The concept of virtual currency bitcoin was first proposed by Satoshi Nakamoto in 2009. Bitcoin is also used to refer to bitcoin's open source software designed and released according to the ideas of Satoshi Nakamoto and the construction of P2P network on it. Unlike most currencies, bitcoin does not rely on a specific central issuing institution, but uses a distributed database throughout the P2P network nodes to record currency transactions, and uses cryptography design to ensure the security of all aspects of currency circulation. For example, bitcoin can only be used by its real owner once, and the original owner loses the ownership of the bitcoin after the payment is completed
what really makes bitcoin famous is a secret shopping website called the silk road
this secret website was founded in February 2011. It is a B2B e-commerce website similar to eBay or Taobao, where you can buy all kinds of drugs, including drugs. It's very complicated to go to the silk road. It won't work by URL. Browsers can't take you there directly. You have to go through a series of technical configurations to get there through an anonymous networking tool called tor
credit card, paypal or other online payment methods are basically traceable or blocked through real name authentication. They're all excluded from the Silk Road payments, and the only one that's popular here is bitcoin. Because it's anonymous payment, tracking is not so easy

the silk road has well demonstrated one of the application scenarios of bitcoin, and has also brought a bad impression of bitcoin to the outside world. After being involved with drugs, it makes people worry that the government may encircle bitcoin
nowadays, bitcoin has been used more and more widely on the Internet, not just on the Silk Road website. Nils Schneider, another core member of the bitcoin project, said that he used bitcoin to pay for most of the online purchases (such as programmer's salary, server rental, domain name fee, etc.), and also converted it into currency to pay for food, etc
as a new thing, bitcoin has not been included in any legal norms, and many people are very happy about it.

5. Amd recently officially announced a new series of video cards, which are designed to provide relatively cost-effective graphics solutions for workstations and professional users. Among these new procts, a new concept graphics card called the radon Pro SSG is the most impressive, because it integrates a large SSD in it

Why did amd come up with such a novelty? We know that the video memory of the graphics card is usually relatively limited. Although it is enough for playing games, if it involves scientific research, engineering or heavy video and rendering work, the huge amount of data makes the video memory insufficient in any case. In fact, NVIDIA recently launched the Quadro p6000 professional GPU, which is equipped with up to 24GB of video memory

considering that handing these data to the system memory or even the hard disk will make the processing speed very slow, amd chooses to take the lead, and a 1TB SSD is directly built into the radon Pro SSG graphics card as a frame buffer, so that large data sets can be loaded directly for local processing, so as to improve the overall performance

amd points out that no matter what kind of application requirements are, radon Pro SSG will be an ideal choice. Its powerful performance ensures that users can smoothly handle scientific research tasks, VR content creation, and 8K video real-time post-processing, etc. If you really need to deal with such heavy work in your work, or simply pursue a very smooth processing experience, the radon Pro SSG is really attractive

in the initial demo demo, the powerful power of radon Pro SSG was beyond imagination. When rendering unprocessed 8K video, the general processing scheme can only reach 17 frames per second. However, after using SSG, the speed immediately soared to more than 90 frames per second. From any angle, this achievement is impressive.

6. See funny pictures can go to Jun Bujian to see there are a lot of funny pictures funny jokes, hope to help you
the new version of RMB has been issued for some time. Have you ever used it? Anyway, my family went to the bank for a lot of money. They prepared to send red envelopes ring the Spring Festival. The new version of RMB is very suitable for the new year< br />
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however, Hao Mingjian, editor in chief of yaowenchuizi, recently pointed out that there are some typos on the new version of RMB at the release site of "2015 top ten catchwords" in yaowenchuizi! Xiaobian, when I heard the news, I quickly took out the new version of RMB and had a look, right< br />
\< According to Hao Mingjian, editor in chief of biting words, the word "Yuan" in the "one hundred yuan" in the new version of RMB is wrong! Although there was "silver dollar" in the past, we only wrote it in RMB, but now it is stipulated that the unit of RMB is "Yuan". It is obviously wrong to write it again< br />
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I understand all the reasons, but I really want to know why the old version of RMB has been written like this all the time. Why did it start to discuss this issue in the new version? Besides, it's also the "Yuan" on the ten or twenty yuan. It's obvious that holding on to the new version of RMB is to attract people's attention

he is worthy of being the editor in chief of "biting words". He has really "biting words". Not only this time, he pointed out seven grammatical errors on his ID card: "name", "gender" and "address" are juxtaposed with "birth", but "birth" is a verb and should not be used in juxtaposition with three nouns< br />
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this kind of diction reminds me of the Chinese examination questions in high school. We also work hard every day to pick out language diseases and wrong words, and we will become neurotic. However, when we graate from high school, the wrong usage will be used repeatedly< br />
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however, with the development of the Internet, there are more and more popular words on the Internet, and most of them have no grammar to speak of. If we all speak according to the rules, the world will become very boring ~

& # 92

it's necessary to pay attention to grammatical errors and typos, but it's also unnecessary to find fault. For example, the new version of RMB can be written as the country likes. Anyway, we have been used to the "one hundred yuan" for a long time< br />
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however, if anyone dislikes his wrong words in RMB, please send them to me by mail, 10 yuan per kilogram, and collect them at a high price
the source is not cheap

7. First of all, with the real estate as the guarantee of debt, both parties of the mortgage must sign a written real estate mortgage contract, which should be standardized. It includes:
1. The name of the mortgagor and the mortgagee or the name and address of the indivial
2. The type and amount of the principal creditor's rights
3. The location, name, condition, building area and land area of the mortgaged real estate
4. The value of mortgaged real estate
5. Occupation manager, occupation management mode, occupation management responsibility, and accidental damage and loss responsibility of the mortgaged real estate
6. Term of mortgage
7. The conditions of mortgage loss
8. Liability for breach of contract
9. Dispute resolution methods
10. The time and place of signing the mortgage contract
11. Other matters agreed by both parties
secondly, mortgage registration should be carried out. That is to say, the parties to the mortgage shall register the real estate mortgage with the real estate administrative department of the place where the real estate is located within 30 days from the date of signing the real estate mortgage contract. When handling mortgage registration, the following documents should be submitted to the registration authority for verification:
1. Identity certificate or legal person qualification certificate of the mortgage parties
2. Mortgage registration application; Mortgage contract
3. State owned land use right certificate, housing ownership certificate or real estate ownership certificate. For a jointly owned house, the certificate of CO ownership certificate and other co owners' consent to mortgage must also be submitted
4. Documents and materials that can prove that the mortgagor has the right to set mortgage
5. Data that can prove the value of the mortgaged real estate
6. Other documents deemed necessary by the registration authority
after verification, the registration authority shall register the mortgage if the ownership is clear, the supporting materials are complete and meet the mortgage conditions. The real estate mortgage contract takes effect from the date of mortgage registration and is protected by law. If there is no mortgage registration, the mortgage contract will be invalid and the mortgage right will not be established.

8. The price of gold is different in every shop.

9. The real estate transaction center provides the form, you fill in according to the above. The service charge here is 80 yuan per apartment and 350 yuan per shop. It is estimated that there are regional differences. The charging standards are different in different places...

10. Cheng real estate mortgage loan processing process:
1. Put forward the loan intention to the guarantee company, make a general judgment on your loan situation through communication,
2. Submit the required information to the guarantee company, and the guarantee company reports to the evaluation company to evaluate the collateral
3. The guarantee company collates the information, delivers it to the bank and signs the contract with the bank
4. After approval, the bank will register the mortgage and make loans after taking other rights< (1) the second generation ID card of the borrower< (2) information on the purpose of the loan
(3) real estate certification materials:
1. The client who has settled the house loan in another bank shall provide: the original of the real estate certificate or the of the real estate certificate with the bank seal
2. Other banks' unsettled mortgage customers provide: original mortgage contract or of mortgage contract with bank seal
3. For other bank's housing loan customers who are unable to provide the above 1 and 2 information, they need to provide the inquiry form of the housing registration information system of the competent real estate department