How long can I get a bitcoin
The most advanced bitcoin mining machine, one to two years to dig out a bitcoin, bitcoin mining is now too difficult. If you want to dig, you can dig ether currency. Now it is steadily appreciating every day. According to the current development trend, it will be able to recover its capital in about seven months, and then it will be profitable< br />
bitcoin does not rely on specific currency institutions to issue. It is generated through a large number of calculations of specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction
because more and more people have been g out, less and less people have not been g out, and more and more people have participated in bitcoin mining, it will become more and more difficult. Many of them go directly to the trading platform to buy. I trade on dobby trading platform
(12:00 on December 12) zhongbencong mining was officially launched
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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
this depends on the CPU computing time of your computer, and on your network speed. If you use an ordinary home computer or a personal mobile phone. You don't have to get a bitcoin a year
unless there are more powerful mining machines. Of course, it will cost more. Unless you don't invest in mining machines, you invest in illegal software. Let these illegal software invade other people's computers and mobile phones. Other people's computers and mobile phones do a lot of bitcoin computing and mining. In this way, the cost of mining machine, electricity, flow, heat dissipation and so on are saved. But we need to know that this is a violation of national laws. This will also allow other people's mobile phones to carry out a lot of calculations after power on, encroach on other people's memory, and make other people's mobile phones scrapped earlier< br />
in 2014, the total computing power is 4000ghash / s every day, and 3600 bitcoins are g out every 24 hours
it is impossible to dig out bitcoin with computer CPU now. Generally, multiple bitcoin mining machines are used to dig out bitcoin in parallel.
warm tips: 1. The above contents are for reference only, without any suggestions. The relevant procts are issued and managed by the corresponding platform or company, and our bank does not undertake the responsibilities of investment, cashing and risk management of the procts. 2. There are risks in entering the market, so investment should be cautious. Before making any investment, you should make sure that you fully understand the nature of the investment and the risks involved in the proct. After a detailed understanding and careful evaluation of the proct, you can judge whether to participate in the transaction
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what is pre-sale
there are many titles for pre-sale personnel, such as pre-sale engineer, solution expert, pre-sale consulting engineer, technical consultant, pre-sale technical support engineer, etc
in fact, pre-sale is a broad term for participants in the pre-sale stage
what is the pre-sales stage the life cycle of an IT project can be roughly divided into three stages: pre-sale, in sale and after-sale pre sale refers to the stage before signing a contract with a customer. It generally includes the process of obtaining clues, customer communication, providing technical solutions, bidding, signing contracts and so on in sale refers to the stage after signing with customers. It includes requirements review, design, development and implementation after sales refers to the stage after project delivery. It includes maintenance, training and technical support presales mainly provide technical support in the pre-sale stage, but continuity is usually considered in an IT project, so presales will also participate in the in-sale and after-sale work the relationship between pre-sales and other IT personnel pre sales vs sales sales (account Manager) undertakes business for the company, and needs to be engaged in business activities such as seeking clues, visiting customers and maintaining customer information but in the process of signing a project, it needs a lot of technical and documentation work. Such as technical communication with customers, writing technical documents and so on. These jobs are usually done by presales
pre sales vs R & d
why not let R & D support sales? Because although R & D understands technology, it doesn't understand business
take software developers for example, they may understand java language, C language, Oracle database and Hadoop architecture, but they may not understand customers' business, such as financial business, medical business, even monetary theory and medical technology. These are business. Technology should be based on business
pre sales is the group of people who know the most about customer business in IT companies. Before sales, the customer's business needs into technical personnel can understand the language
pre sales vs Proct Manager
it sounds like the concept of proct manager in pre-sales and Internet companies is very similar. In fact, in IT companies, there is also the role of proct manager. What's the difference between pre-sale and proct manager
the common point is that both of them need to communicate with customers, research needs and write requirements documents
the difference is: the mission of pre-sales is to sign orders, and the mission of proct manager is to build procts. Before sales, I think more about how to develop the market and sign more projects. The ideal of proct management is how to create better and more marketable procts
type of pre-sale
it is necessary to know the type of pre-sale before answering what to do. According to whether there is a proct, whether it belongs to the headquarters or the region, presale can be divided into four categories
Proct Type pre sales & amp; Scheme type pre-sales
Proct Type pre-sales is the most easy to understand, that is, after the company has a proct, it helps sales to promote the proct to customers. Hardware companies, such as server and switch manufacturers, are mainly pre-sale procts
many enterprise customers want procts that are not available in the market. What manufacturers have to do is to provide solutions. This kind of pre-sale is the solution type pre-sale. For example, in the integrated manufacturers, it is mainly the solution type pre-sale
proct line pre sales & amp; Regional pre-sales
many large IT manufacturers have multiple R & D proct lines, and at the same time, there are many regional centers all over the country. So there are proct line pre-sale and regional pre-sale classification
before sales, proct lines usually focus on a certain instry or even a certain type of business, have forward-looking consideration and layout of procts, and face the national market
Regional pre-sales is closer to customers and better understand their needs. Regional pre-sale needs to face multiple customers or even multiple instries in the region, and the depth of understanding of business is not as deep as that of proct line pre-sale, but the breadth is greater than that of the latter
in this kind of company, proct type pre-sales and regional pre-sales often need to learn from each other and make up for each other
pre sales responsibilities
the basic responsibility of pre-sales is to assist the sales to complete the project signing, and the pre-sales work is mainly carried out around the project life cycle
pre sales stage
< UL >solution planning: pre sales needs to explore instry demands, problems and pain points, sort out instry solutions and best practices, and carry out solution planning and design
Technical Exchange: assist the sales department in technical exchange with the target customers, explain the existing solutions and cases of the company, and understand the needs of customers in the exchange
write solutions: write solutions based on customer needs
scheme explanation: responsible for explaining and demonstrating the scheme for customers, and guiding users to identify with the technical scheme
write technical documents: if the scheme is accepted by users, there are many links to provide technical documents before bidding, such as technical specifications, feasibility study materials, workload evaluation materials, etc
Bidding Support: responsible for assisting sales to complete the bidding work, mainly responsible for the preparation of technical volume and business volume, and going to the bidding site for bid presentation and defense
demand research in the sale stage: after signing the project (often before signing the project), the first step is to conct demand research and analysis, and prepare the top-level design, demand specification, and demand management
requirement disclosure: responsible for the requirement disclosure of the project from pre-sale to in-sale, assist the delivery team to confirm the requirements, and provide relevant documents and knowledge transfer for project implementation
cooperative delivery: cooperate with the delivery manager to complete the delivery of the overall project; Because the company is good at writing materials before sales, it often helps the deliverer manager or customer to write work reports, work summaries, technical innovation and other materials
after sales stage
after sales service: such as proct technical training, material support work
demand collection: in the after-sales stage (often on sale), it is necessary to collect users' new demands before sales. When there are more demands, it is necessary to strive to promote customers to set up another phase of the project
for large IT companies, these responsibilities are usually distributed to different categories of presales, such as solution experts, presales leaders, proct line presales and regional presales
pre sales capability system
(this section will not elaborate, and interested readers can pay attention to other articles of "it pre sales circle")
word: only the pre-sale writers can understand the profundity of word
Excel: mainly used for managing clues and requirements; Before sale, this software is overqualified
ppt: the higher the rank is, the better the PPT is
Visio: used to draw flow chart and network architecture diagram
PS: it will be used when it's cold, I won't elaborate here
mind mapping software, such as mindmaster: help to sort out work, materials and ideas
Axure: it is mainly used for software pre-sale, for interface design
notes: for example, Daoyun notes, OneNote, etc., which are used to record events, take learning notes, and collect materials
It's a fraud. It's a 100% online pyramid scheme
The reasons are as follows:-
RMB recharge purchase π First, according to the exchange rate (RMB 6.74 to US $1 on July 26, 2017), it will be converted into US dollars, and then it will be purchased at the rate of US $5.98 on July 28, 2017 π Purchase π In the process of recharging, the handling fee is charged in US dollars
the handling charge is still very high (they say it's 6% of the total). You can transfer the funds π In this "yu'ebao", 10 days of appreciation will not bring back the money of handling charges< br /> π It's expensive to buy coins on the app's exchange (5.98 U.S. dollars to 1 π 97 dollars to 1 π Currency). I just hope you put the money in it and don't withdraw it, waiting for appreciation and occupying your money. As long as it turns into RMB, it will be sold and it will lose money
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this π Currency is not the currency issued by the state in the form of economy (equivalent to gold or monetary credit of the State Finance), but the virtual value issued by a certain group, which will have risks. You only need a mobile phone number to register, not an ID card. It means that it is not a national act, and the currency value will have the risk of cashing and cashing
in other words, if the app is banned or closed by the competent department of the national government, there will be no virtual currency purchased with RMB recharged by itself. So it's a scam