Blockchain dictionary

2. The content of blockchain is comprehensive.

3.

Share the python learning path

the first stage is Python foundation and Linux database. This is the beginning stage of python, and also an important stage to help students lay a good foundation. You need to master Python basic syntax rules and variables, logic control, built-in data structure, file operation, advanced functions, moles, common standard library moles, functions, exception handling, MySQL use, coroutine and other knowledge points

learning objectives: master basic Python syntax and basic programming ability; Master the basic operation commands of Linux, master the advanced content of MySQL, and complete the projects of bank ATM system, English Chinese dictionary, lyrics parser, etc

the second stage is full web stack. In this part, you need to master HTML, CSS, JavaScript, jQuery, bootstrap, web development foundation, Vue, flag views, flag template, database operation, flag configuration and other knowledge

learning objectives: master the web front-end technology content, master the web back-end framework, skillfully use flash, tornado, Django, and complete the data monitoring background project

The third stage is data analysis + artificial intelligence. This part is mainly to learn the knowledge points related to crawler. You need to master the knowledge of data capture, data extraction, data storage, crawler concurrency, dynamic web page capture, scrapy framework, distributed crawler, crawler attack and defense, data structure, algorithm, etc

learning objective: to master crawler, data acquisition, data organization and algorithm advanced and artificial intelligence technology. It can complete crawler attack and defense, image mosaic, movie recommendation system, earthquake prediction, artificial intelligence project and other stage projects

The fourth stage is advanced. This is a python advanced knowledge point. You need to learn project development process, deployment, high concurrency, performance tuning, go language foundation, blockchain introction, etc

learning objectives: master the technology of automatic operation and maintenance and blockchain development, and complete the automatic operation and maintenance projects, blockchain and other projects

according to the python learning roadmap above, you can basically become a qualified Python development engineer. Of course, if you want to quickly become the elite talents of enterprises, you need good teachers to guide you, and you need more projects to accumulate practical experience

4. The maximum computing power is 68th / s. Shenma M20S
because the mining machine has a service life, in order to ensure that the computing power does not decline, it only provides a 2-year lease term

5. First, you have to have passion and ideas to infect yourself and others. In the most difficult time, when everyone is desperate, you have to infect your customers, your employees, your partners... You have to infect everyone
Second, focus. Let alone small companies, there are also examples of failure in the diversification of large companies. Small companies should grasp one point and make it deep and thorough. Only in this way can we accumulate all the resources. Small companies are experimenting everywhere, and your business will run out of resources. It is very important to focus on what you don't do in order to do something
the third is execution. Many entrepreneurs are easy to fall here. Many people boast and estimate that they will not succeed in starting a business, at least for the first time, because real entrepreneurs have to say less and do more and try to turn their wonderful ideas into results. An idea is just a way to start. It's not worth it. If we sit here for an hour, we can come up with dozens of ideas. With a little brain rotation, your ideas have been going back and forth in the universe for several times - the cost of action is the highest. For entrepreneurs, it depends on whether they have such experience and executive power. The same idea, two people do the same, who is more executive, who has more experience, who is more likely to succeed
fourthly, entrepreneurs should also have a kind of mind, which is the so-called learning ability to keep pace with the times. Many people are not successful because they are too conceited to learn some advantages from successful people and listen to good suggestions. Many entrepreneurs have no experience. It's not terrible to have no experience. The question is whether you have a modest and open learning attitude, so that you can't keep pace with the times. Many entrepreneurs will fall into a dead circle, they usually think that their own view is accurate, is the premise of the move; The more experience you accumulate, the more accurate you can be. But you have no experience, how can you be sure? There is a way to solve this problem. If the time is not ripe, do not start a business and work for others first. Do well what the company asks you to do, improve your ability, and graally know the direction of entrepreneurship. Fifth, don't blindly imitate and the practices of big companies. For example, many people have done it in Sina and Sohu. When they come out, they will unconsciously establish some standard systems according to the practice of large companies. However, large companies are generally slow in order to be safe. Big companies can afford to be slow. Small companies can't do things the way big companies do. If you do the same thing with a big company, he is very strong and has no advantage over him. Therefore, if you draw a map of the whole instry, you can see which fields are occupied by who and who has what advantages. You should find something that's not on this map.

6. It's not a concept at all
blockchain system consists of data layer, network layer, consensus layer, incentive layer, contract layer and application layer
among them, the data layer encapsulates the underlying data block and related data encryption and timestamp technologies; The network layer includes distributed networking mechanism, data transmission mechanism and data verification mechanism; The consensus layer mainly encapsulates all kinds of consensus algorithms of network nodes; The incentive layer integrates economic factors into the blockchain technology system, mainly including the issuance mechanism and distribution mechanism of economic incentives; The contract layer mainly encapsulates all kinds of scripts, algorithms and smart contracts, which is the basis of the programmable characteristics of blockchain; The application layer encapsulates various application scenarios and cases of blockchain

7. Little knowledge of blockchain: what are the characteristics of blockchain
nowadays, blockchain has become an area of public concern, and many enterprises have already studied the implementation of this technology. However, there are still a large number of people who are not familiar with the relevant concepts of blockchain technology. Recently, Viking Research Institute and think tank a jointly proced the blockchain instry dictionary. Bianews, as a media partner, has been authorized to popularize the knowledge of blockchain every day
today, bianews will bring you a little knowledge of blockchain. (2) the characteristics of blockchain
1. Anonymity / anonymousness because the data exchange between the nodes of the blockchain follows a fixed and predictable algorithm, the blockchain network does not need to be trusted and can exchange data based on address rather than personal identity
2. Autonomous / autonomous blockchain adopts consensus based mechanism, which enables all nodes in the whole system to exchange data, record data and update data freely and safely in a de trusted environment, without any human intervention
3. The open / openness blockchain system is open, and any node can have the total account book of the whole network. Except that the private information of the parties directly related to the data is encrypted by asymmetric encryption technology, the data of the blockchain is open to all nodes, so the information of the whole system is highly transparent
4. The digital nature of programmable / programmable distributed ledger means that blockchain transactions can be associated with computing logic and are programmable in nature. Therefore, users can set algorithms and rules to automatically trigger transactions between nodes
5. The traceability / Traceability blockchain stores all the historical data after the genesis block through the block data structure, and any data on the blockchain can be traced back to its origin through the chain structure
6. Tamper proof / after the information of tamper proof blockchain is added to the blockchain through consensus, it is jointly recorded by all nodes, and the mutual correlation is ensured through cryptography, so the difficulty and cost of tampering is very high
7. The collective maintenance / collectively maintain blockchain system is jointly maintained by all the nodes with maintenance function. All nodes can query blockchain data and develop related applications through open interfaces
8. No license / permissionless no license means that all nodes can request to add any transaction to the blockchain, but only if all users think it is legal.

8. You are recommended to download You dictionary. In fact, English and Chinese are almost the same. You see, bees and honey don't mean the same thing. Don't try to learn English too hard. You can learn it better.

9. Python language is simple, easy to learn, grammar clear, elegant, suitable for zero basic learning, if the self-learning ability is strong, the foundation is good, the front stage can choose self-study, followed by the teacher to learn; On the contrary, if the foundation is poor and the ability is weak, it is better to follow the teacher as a whole.

10. 1. Perseverance and perseverance: perseverance and perseverance are very important and necessary for learning Python knowledge. Many people are not successful in learning python. In fact, the reason is very simple. Most people have poor self-control and no management ability. In this case, the best way is to find someone who can play a supervisory role to help you, The development of strict reward and punishment system can better maintain the continuity of learning
2. High quality teaching materials: perseverance and perseverance are not enough for us to learn python. At the same time, if we want to learn Python well, materials and good teaching materials are very important. Good learning materials can help us keep clear thinking, rich and comprehensive content, clear priorities, and more in line with the needs of enterprises, It's easier to learn in this way. Of course, there are many books and videos that you can choose according to your personal preferences
3. Learning methods: it is also very important to master reasonable and effective learning methods. Good learning methods can get twice the result with half the effort. Many people may just practice blindly. In fact, in the process of learning python, they learn to correct their mistakes and correct their own mistakes, which makes it easier to get started and better learning effect
4. Project practice: real project experience is also indispensable. The main purpose of learning Python is to develop and work, so real combat is very important for us. If we want to deepen the skills and technology of python, it is also very important to win in real combat.