The mining machine only exists for half a year

1. FPGA is free, it seems that mining costs a lot of electricity, Taobao seems to sell information program before

2. The purpose of mining is to package the transaction block. If the package is successful, you will open a new package and get a 25 bitcoin reward, as well as the handling charge for the future transactions added to the package

then other miners will start to package the transaction generated by your new package until the next package comes out first

in the future, the mining capacity of bitcoin will be small or even zero. You still have transaction fees. The system will always need miners, and mining machines will still exist.

3.

1、 Mining principle

at the beginning, we could dig bitcoin with the computer CPU. The founder of bitcoin, Nakamoto Tsung, g out the world's first creation block with his computer CPU. However, the era of CPU mining has long passed, and now bitcoin mining is the era of ASIC mining and large-scale cluster mining

looking back on the mining history, bitcoin mining has gone through the following five times: CPU mining → GPU mining → FPGA mining → ASIC mining → large-scale cluster mining, The mining speed changes are as follows:

CPU (20mhash / s) → GPU (400mhash / s) → FPGA (25ghash / s) → ASIC (3.5tash / s) → large scale cluster mining (3.5tash / s * x)

mining speed, which is called computing power in professional terms, that 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

to successfully generate data blocks, miners need to find the effective hash value. To get the correct hash value, there is no shortcut. You can only guess. The process of guessing is the process of computer random hash collision. If you guess correctly, you will get bitcoin

Mining method: from a miner to a large-scale mine, you need to prepare a miner, a computer that can connect to the Internet, an AUC, a raspberry pie, power supply and all kinds of connecting lines, etc. The connection order of various devices is network cable - & gt; Raspberry pie - & gt; Microusb cable - & gt; AUC-> 4Pin cable - & gt; Mining machine and power supply

< EM > Figure 3: Mine Map (scale of tens of thousands of mining machines) < / EM >

nowadays, the profit space of small and medium-sized absenteeism who take one mining machine home or deploy a small family workshop (dozens of mining machines) is very limited, and the mining instry is graally concentrating on enterprises and teams with low-cost power resources and professional deployment ability

there are many factors that affect the mining revenue, such as the performance and power consumption of mining machinery, the computing power and difficulty of the whole network, the deployment and operation and maintenance capacity of the mine, the availability of low-cost electricity resources, and the currency price and policy guidance, etc. At present, excellent mining enterprises have the ability of chip research and development, a lot of computing power, professional mine deployment and operation experience, etc. in the future, resources and computing power will be more and more concentrated in these mining enterprises

2. Mine pool

in addition to the above equipment, you also need a necessary tool - mine pool. The function of the mine pool is to gather a large amount of mineral computing power, increase your probability of getting bitcoin, and at the same time, distribute your future bitcoin income to your account in advance

the simple explanation is as follows: now the bitcoin network generates a block every 10 minutes, which contains 25 bitcoins. Suppose there are 1W people in the world participating in mining, then in these 10 minutes, only one lucky person has taken these 25 bitcoins, and the others have nothing. The principle of the mine pool is that everyone mines in teams and distributes according to the agreed distribution method, so that the income of the miners' bitcoin tends to be stable and the risks of the miners are reced. Let's take the most common PPS allocation method as an example. Suppose that your computing power is 10t, and the computing power of the whole mine pool is 100t. Your computing power accounts for 1 / 10 of the total computing power of the mine pool. Suppose that the mine pool can generate 10 bitcoins a day, then you can get 1 bitcoin a day

3. Cloud computing power

in reality, the supply of mining machines often exceeds the demand, and at the same time, the delivery of mining machines needs a long waiting period. Miner installation, commissioning, maintenance and other processes are very complex, which requires a lot of energy. Miners have to enre the noise and heat of miner. For miners, the biggest cost is not these, but the high electricity charges consumed by mining. The profit space of small and medium-sized miners is getting smaller and smaller, even negative

Mining income and risk mining income can be calculated by the following formula:

Mining income = generated bitcoin * currency price - mining machinery cost - electricity fee - custody fee

if you are just a small miner, generally you only need to dect mining machinery cost and electricity fee

Mining risks are as follows:

< UL >

at present, the number of bitcoin is less than 4.5 million. If we do not issue additional bitcoin, the price of bitcoin will fluctuate, and the price callback will lead to the extension of the payback cycle

mining difficulty improvement at present, our machines can meet the market demand

the risk of power outage

< UL >

< EM >
< / EM >

4. In my opinion, if it reaches 10nm, the movement of the electron will have a great impact on the normal operation, which will greatly affect the yield of the proct. As far as I know, there is no good process to solve this kind of problem. Therefore, in the short run, it is better to consider expanding to three dimensions than to increase the plane density. It may be a practical method to forget the multi stack scheme proposed by which company in the front-end time.

5. As long as you're really interested and don't learn as soon as your brain is hot, I think you can continue. It's really difficult to make chips. We are also short of chip talents. Few domestic chip companies are well-known. As far as I know, the strength of Beijing xinrong is comparable to that of foreign companies.

6. Unknown_Error

7. Do a TFT driver (including GUI) how, I also want to do

8. When you are familiar with SCM, you will feel that SCM development is relatively easy. If you step into this line and become an old driver, you will feel that FPGA development is difficult to SCM development to do a good job.

9. FPGA is just implementation, the key is algorithm. If there is no self-study project, the space for progress is limited. It is necessary to follow Daniel to edify him. I wish you progress

10. First of all, do you start to learn under the leadership of others or by yourself? If someone takes you to study, it will be much faster than independent study. Generally, it is almost twice as fast. It varies from person to person
secondly, how difficult is the independent FPGA development project? If it's not very difficult, simple projects, it will be very fast, because the information on the network is relatively complete. If it's a large project, it's very difficult for you to solve it by yourself. At this time, you need team cooperation
to sum up, if someone leads the learning, and the project is simple, such as the implementation of a simple interface, it can be completed in 4 months, if no one leads, at least half a year. If it's a large-scale project, we have to consider many factors. The market needs, generally faster, many people will develop it at the same time, immeasurable, ha ha, sorry

again, I want to say that the most important thing for a technical person is to be down-to-earth. Impetuous will only let you learn something simple. And, learning FPGA, the foundation is very important, you first need to absorb these down-to-earth, in order to really understand FPGA and design good projects: digital, Verilog / VHDL, mathematical algorithm

in addition, I wish you success!