How long does it take to dig a bitcoin cash
CPU mining → GPU mining → FPGA mining → ASIC mining → large-scale cluster mining
while mining chips are updated, The change of mining speed is:
CPU (20mhash / s) → GPU (400mhash / s) → FPGA (25ghash / s) → ASIC (3.5thash / s) → large scale cluster mining (3.5thash / s * x)
mining speed, which is called computing power in professional terms, is the ability of computer to generate hash collisions per second. In other words, how many hash collisions can our miner do per second is the calculation force. Computing power is the ability to dig bitcoin. The higher the computing power, the more bitcoin you dig, the higher the return
in the world of bitcoin, a data block is recorded about every 10 minutes. All mining computers are trying to package the data block and submit it, and the person who successfully generates the data block will get a bitcoin reward. Initially, bitcoin rewards of 50 bitcoins could be generated about every 10 minutes. But the payment is halved every four years, and now the bitcoin network can generate 25 bitcoins every 10 minutes
in order to successfully generate data blocks, miners need to find the effective hash value. To get the correct hash value, there is no shortcut. They have to guess. The process of guessing is the process of computer random hash collision. If you guess correctly, you will get bitcoin
so far, the highest 1btc price in bitcoin history is about $20000, with a market value of more than $60 billion.
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
Step 1: prepare mining machines and pools
if you want to dig bitcoin, you must prepare professional equipment. At present, there are many professional mining machines on the market, and the pool is also essential. When you choose a pool, you should also compare the output and income gap of each pool, and then choose the most suitable one
Step 2: register and set the mine account
after the mine is ready, register the mine account and set a common email. When setting the mine account, each CPU or GPU needs to set a mine account
Step 3: download the bitcoin miner
after you register and set up your account, you need to download the bitcoin miner. When downloading the miner, be sure to choose the miner that can make your CPU and graphics card play the most function. After downloading, set the server, user name, password, device and so on
Step 4: Mining
after setting up the miner, click the "start mining" button, the miner will enter the state of full speed operation, and the miner will start mining automatically.
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
response time: February 5, 2021. Please refer to the official website of Ping An Bank for the latest business changes
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first of all, bitcoin is not created one by one. Bitcoin is made up of one account book after another. As long as you can record one account book, the system will reward you accordingly (starting from 2009, after four years, one will reward 50 bitcoins, another four years, one will reward 25 bitcoins, and so on), Because the account book records the transaction information, the transaction fees generated by the transaction also belong to the bookkeeper. Such a good thing, of course, everyone wants to keep accounts. At this time, the more wonderful thing will come. The system will put a mathematical problem every ten minutes. Whoever works out first will have the right to keep accounts. They can keep accounts and get bitcoin generated by keeping accounts
then the generated bitcoin will be saved in your wallet address. You can transfer the bitcoin in the address to EXX. There are not only bitcoin, but also more valuable currencies. Of course, you need to choose
investment is risky, and we should cherish it
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
According to the current computing power of the whole network, it takes 54436.5t of computing power to dig a bitcoin 24 hours, that is, one bitcoin a day< it requires 746 mining machines with the latest 73t capacity on the market to work together for 24 hours
the cost of mining mainly includes (mining machine cost / power cost). Now the latest miner is 22650 yuan, a miner consumes 77 kwh per day. At present, the price of mining machinery on the market is about 0.36 yuan, 28 yuan per day. The cost of mining bitcoin = mining machine price (22650)
mining bitcoin requires a professional site "mine" to place mining machines. The construction cost of placing about 3000 mining machines in a small professional mine is about 300 watts
extended data
unable to mine at home
the noise of 60-80 decibels will be proced by the mining machine in the working process. Mining at home is not feasible, the miner needs 24 hours of endless operation, so the temperature of the miner will be very high, the maximum temperature can reach 80 degrees. Therefore, mining needs a good environment to rece the temperature. Household electricity and electricity charges are high, and the cost is higher than the income. In addition, mining has a certain degree of professionalism, professionals need to carry out certain operation and maintenance to ensure the normal operation of the mining machine
the key to rece the mining cost is to purchase mining machines in batches and low electricity charges. Professional mine is built to ensure the operation of mining machinery. At present, the mainstream mining machinery manufacturers are bitcontinental Technology Co., Ltd. in Beijing and Jianan Yun Technology Co., Ltd. in Hangzhou. Mining machinery is proced in the form of appointment in futures. It is difficult for indivials to buy Mining machinery in small quantities on the official website. After years of development, the mining machinery market has formed a complete instrial chain. The price of mining machinery fluctuates with the price of money, and the power resources are basically distributed in the cheap western region. Getting cheap electricity prices requires personal resource advantages
bitcoin = RMB = US dollar, so everyone went to mine
virtual currency ensures the security of currency through close and complex mathematical calculation, and the more people join in mining, the safer the currency will be
mining needs calculation, and calculation needs graphics card. Ordinary graphics card can draw pictures, calculate, play games, etc. professional mining card sacrifices other functions besides calculation, and is dedicated to mining
Mining cards are generally used in professional mining machines, such as
coin potential
mining machine, which is tens of times faster than ordinary computer mining machine, and its computing power is up to 165mh / s. High computing power means that your mining speed is fast and your income is high, so now mining has entered the era of specialization and clustering. If you want to mine, you must buy mining machines and join the mining pool, otherwise the mining income is not enough to pay the electricity bill
it's almost impossible for ordinary computers to find virtual currency, because the proction of currency is a competitive mechanism. The computing power of ordinary computers is almost the same as that of professional mining machines. If you really want to calculate, your computer can't dig bitcoin. If you dig ether currency, the monthly income is 353 yuan, and the machine needs to be turned on 24 hours.