Turing complete system Ethereum
Publish: 2021-05-19 08:11:58
1. Ethereum is a new and open blockchain platform, which allows anyone to build and use decentralized applications running through blockchain technology in the platform
just like bitcoin, Ethereum is neither controlled nor owned by anyone - it is an open source project created by many people around the world. Different from bitcoin protocol, Ethereum's design is very flexible and adaptable. It is very easy to create new applications on the Ethereum platform. With the release of homestead, anyone can use the applications on this platform safely
Ethereum is a programmable blockchain. It does not give users a series of preset operations, but allows users to create complex operations according to their own wishes. In this way, it can be used as a platform for many types of decentralized blockchain applications
in a narrow sense, Ethereum refers to a series of protocols that define a decentralized application platform. The core of Ethereum is Ethereum virtual machine (EVM), which can encode any complex algorithm. In computer science terminology, Ethereum is "Turing complete.". Developers can use the existing JavaScript and python as the model of other friendly programming languages to create applications running on the Ethereum simulator.
just like bitcoin, Ethereum is neither controlled nor owned by anyone - it is an open source project created by many people around the world. Different from bitcoin protocol, Ethereum's design is very flexible and adaptable. It is very easy to create new applications on the Ethereum platform. With the release of homestead, anyone can use the applications on this platform safely
Ethereum is a programmable blockchain. It does not give users a series of preset operations, but allows users to create complex operations according to their own wishes. In this way, it can be used as a platform for many types of decentralized blockchain applications
in a narrow sense, Ethereum refers to a series of protocols that define a decentralized application platform. The core of Ethereum is Ethereum virtual machine (EVM), which can encode any complex algorithm. In computer science terminology, Ethereum is "Turing complete.". Developers can use the existing JavaScript and python as the model of other friendly programming languages to create applications running on the Ethereum simulator.
2.
Ethereum is an open source public blockchain platform with smart contract function. It provides decentralized virtual machine (Ethereum virtual machine) to process point-to-point contract through its special cryptocurrency ether (also known as "Ethereum")
The token on theblockchain is called ether, and the code is eth. It can be traded in many foreign exchange markets of cryptocurrency, and it is also the medium used to pay transaction fees and computing services on Ethereum
the concept of Ethereum was first proposed by vitalik buterin, a programmer, from 2013 to 2014, inspired by bitcoin, with the general meaning of "next generation cryptocurrency and decentralized application platform", and began to develop through ICO crowdfunding in 2014. As of February 2018, Ethernet is the second highest cryptocurrency in market value, second only to bitcoin
extended data:
Ethereum platform has no characteristics and value. Like programming languages, it's up to entrepreneurs and developers to decide what to use. However, it is clear that some application types benefit more from the functions of Ethereum than others. Ethereum is especially suitable for those applications that automatically interact directly between points or promote group coordination activities across networks
for example, coordinate the application of point-to-point market, or the automation of complex financial contracts. Bitcoin enables indivials to exchange money without the help of financial institutions, banks or governments. The impact of Ethereum may be more profound
in theory, any complex financial activities or transactions can be automatically and reliably carried out on Ethereum with coding. In addition to financial applications, any application scenario with high requirements for trust, security and persistence, such as asset registration, voting, management and Internet of things, will be affected by Ethereum platform on a large scale
3. Ethereum focuses on smart contract and Turing. EOS is based on blockchain operating system. Ethereum and EOS are two top blockchains. At present, there are bottlenecks in blockchain technology and narrow application fields.? LF cluster + cloud server is the most advanced blockchain 3.0 at present. Focusing on different blockchain projects such as public chain, storage chain, Im chain, asset chain and application chain, the advantage lies in resource isolation: each smart contract has its own blockchain, and the governance and development of proxy voting system of token holders has the most development prospect.
4. Ethereum project draws lessons from the technology of bitcoin blockchain and expands its application scope. If bitcoin is a special calculator using blockchain technology, Ethereum is a general-purpose computer using blockchain technology. In short, Ethereum = blockchain + smart contract
compared with bitcoin, the biggest difference of Ethereum is that it can support a more powerful scripting language (technically speaking, Turing's complete scripting language), allowing developers to develop any application and implement any smart contract on it, which is also the most powerful point of Ethereum. As a platform, Ethereum can be compared with Apple's app store, on which any developer can develop applications and sell them to users. Each type of financial contract can be written as a smart contract in the form of program code<
the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system.
compared with bitcoin, the biggest difference of Ethereum is that it can support a more powerful scripting language (technically speaking, Turing's complete scripting language), allowing developers to develop any application and implement any smart contract on it, which is also the most powerful point of Ethereum. As a platform, Ethereum can be compared with Apple's app store, on which any developer can develop applications and sell them to users. Each type of financial contract can be written as a smart contract in the form of program code<
the Xueshuo innovation blockchain Technology Workstation of Lianqiao ecation online is the only approved "blockchain Technology Specialty" pilot workstation of "smart learning workshop 2020 Xueshuo innovation workstation" launched by the school planning, construction and development center of the Ministry of ecation of China. Based on providing diversified growth paths for students, the professional station promotes the reform of the training mode of the combination of professional degree research, proction, learning and research, and constructs the applied and compound talent training system.
5. I plan to start a series to talk about architecture. My previous experience is mainly in the area of Internet architecture. Recently, I am sorting out and analyzing the architecture of bitcoin, Ethereum and EOS, so I am going to write a series of articles to talk about the understanding of Internet architecture and blockchain architecture. It will be divided into four articles: 1. Internet proct architecture, 2. Bitcoin architecture analysis, 3. Ethereum architecture analysis, 4. EOS architecture analysis
there is no central server in Ethereum. Instead, there are many equal nodes connected by P2P protocol, which store all the data in many nodes. When a user initiates a transaction, the transaction will be broadcast out through P2P protocol. The miner node verifies, packages and further broadcasts the transaction to the whole network. After confirmation in the blockchain, the operation is considered to be unchangeable
in the articles on blockchain on the Internet, the two words distributed and decentralized are mentioned, sometimes slightly different, sometimes mixed. The author thinks that if we want to distinguish accurately, the distributed system emphasizes that multiple components work together by sending messages, and the decentralized system emphasizes that there is no central node to control the operation of the whole system. Therefore, we think that Ethereum is both decentralized and distributed, or running a decentralized program on a distributed platform.
there is no central server in Ethereum. Instead, there are many equal nodes connected by P2P protocol, which store all the data in many nodes. When a user initiates a transaction, the transaction will be broadcast out through P2P protocol. The miner node verifies, packages and further broadcasts the transaction to the whole network. After confirmation in the blockchain, the operation is considered to be unchangeable
in the articles on blockchain on the Internet, the two words distributed and decentralized are mentioned, sometimes slightly different, sometimes mixed. The author thinks that if we want to distinguish accurately, the distributed system emphasizes that multiple components work together by sending messages, and the decentralized system emphasizes that there is no central node to control the operation of the whole system. Therefore, we think that Ethereum is both decentralized and distributed, or running a decentralized program on a distributed platform.
6. Using Turing complete script language can make CSSL logically compatible with other programming languages, and theoretically realize the logic realized by other languages, and the real business logic to the maximum extent. Hope to adopt it!
7. I've used this machine of my colleagues. The image quality seems not as good as Sr1, but it's OK
the size of the sensor is 1 / 5.5 inch CCD, which is too small
60g hard disk, is it necessary to make it so large
as a new hard disk recording camera, the technology is not very mature, and there are still many problems, such as the problem of shockproof, the problem of hard disk virus...
although the price is still very attractive, I still think it is more reliable to buy a DV camera in one or two years
the domestic price of sr80 ranges from 6800 to 7200, without invoice
personally, I think sr60 is more cost-effective. 30g hard disk is enough. Sr60 is only about 5700 in China
well, let's see what you can do with this machine. For ordinary household use, 30g of storage space is enough. The recording format is MPEG2. It can record 440 minutes in HQ mode, 650 minutes in SP mode and 1250 minutes in LP mode. Isn't that enough? If you are traveling or scientific research for a long time, I suggest you buy 60g, so that the recording time will be doubled, you can shoot for a long time, and you don't have to import it to the computer frequently
image quality largely depends on the camera lens. Whether it is sr80 or sr60, 1 / 5.5-inch single-chip CCD is very common, and it is not the best t * lens in Zeiss lens. The imaging quality is only average, not as good as the Sony ads boast
Sr1 can support 1080i HD model, 1 / 3 "crystal clear vid CMOS sensor, Carl & Chen 8226; Zeiss vario sonnar t * lens, these are incomparable to SR series
although this Sr1 is sold at around 12000 in China, it's a bit high, but you should be aware of the development trend of the camera field. The era of high-definition has come. CCTV will open three sets of high-definition channels to report the 2008 Beijing Olympic Games
you can't buy a DV in one or two years. In the long run, I suggest you buy Sr1
since you are studying abroad and usually use the camera only for entertainment, there is no need to buy Sr1. Sr60 / 80 is enough
it's OK for camera enthusiast users to choose Sr1
the disadvantages of sr80 are also obvious. No matter how large the hard disk space is, it is limited. When the storage is nearly full, you must find a way to import the material to the computer, and the DV tape can be stored for a long time; In addition, aibvane also said that the hard disk has a certain life span. Once there is a problem with the hard disk, it is difficult to repair it; In addition, the minimum illumination is much higher than the nominal 7 lux, and the shooting effect is not good in dim light or at night
it also has the outstanding advantages of electronic anti shake function; In addition, hard disk storage saves money on DV tape
I checked the official specification sheet of Sony's machine. It is used normally and the operating temperature is 0 ° C to + 40 ° C. Storage temperature: - 20 ° C to + 60 ° C
it is recommended that you use the machine outdoors in bad weather as little as possible, or make a heat preservation cover for the machine to wrap it up, which can protect the machine from the cold to a certain extent.
the size of the sensor is 1 / 5.5 inch CCD, which is too small
60g hard disk, is it necessary to make it so large
as a new hard disk recording camera, the technology is not very mature, and there are still many problems, such as the problem of shockproof, the problem of hard disk virus...
although the price is still very attractive, I still think it is more reliable to buy a DV camera in one or two years
the domestic price of sr80 ranges from 6800 to 7200, without invoice
personally, I think sr60 is more cost-effective. 30g hard disk is enough. Sr60 is only about 5700 in China
well, let's see what you can do with this machine. For ordinary household use, 30g of storage space is enough. The recording format is MPEG2. It can record 440 minutes in HQ mode, 650 minutes in SP mode and 1250 minutes in LP mode. Isn't that enough? If you are traveling or scientific research for a long time, I suggest you buy 60g, so that the recording time will be doubled, you can shoot for a long time, and you don't have to import it to the computer frequently
image quality largely depends on the camera lens. Whether it is sr80 or sr60, 1 / 5.5-inch single-chip CCD is very common, and it is not the best t * lens in Zeiss lens. The imaging quality is only average, not as good as the Sony ads boast
Sr1 can support 1080i HD model, 1 / 3 "crystal clear vid CMOS sensor, Carl & Chen 8226; Zeiss vario sonnar t * lens, these are incomparable to SR series
although this Sr1 is sold at around 12000 in China, it's a bit high, but you should be aware of the development trend of the camera field. The era of high-definition has come. CCTV will open three sets of high-definition channels to report the 2008 Beijing Olympic Games
you can't buy a DV in one or two years. In the long run, I suggest you buy Sr1
since you are studying abroad and usually use the camera only for entertainment, there is no need to buy Sr1. Sr60 / 80 is enough
it's OK for camera enthusiast users to choose Sr1
the disadvantages of sr80 are also obvious. No matter how large the hard disk space is, it is limited. When the storage is nearly full, you must find a way to import the material to the computer, and the DV tape can be stored for a long time; In addition, aibvane also said that the hard disk has a certain life span. Once there is a problem with the hard disk, it is difficult to repair it; In addition, the minimum illumination is much higher than the nominal 7 lux, and the shooting effect is not good in dim light or at night
it also has the outstanding advantages of electronic anti shake function; In addition, hard disk storage saves money on DV tape
I checked the official specification sheet of Sony's machine. It is used normally and the operating temperature is 0 ° C to + 40 ° C. Storage temperature: - 20 ° C to + 60 ° C
it is recommended that you use the machine outdoors in bad weather as little as possible, or make a heat preservation cover for the machine to wrap it up, which can protect the machine from the cold to a certain extent.
8. Ethereum is also a proct of blockchain 2.0, which is an open intelligent contract complete solution. Bitcoin is the most important application of blockchain 1.0, which completes currency and payment transactions well. But when we need to record and transfer more complex asset types, we need the third step - a more powerful scripting system - to finally achieve Turing completeness (the ability to run any currency, protocol or blockchain). Ethereum is a blockchain based project, which aims to provide a Turing complete scripting language and Turing complete platform
blockchain 1.0 mainly refers to bitcoin. Blockchain 2.0 extends to all assets, while blockchain 3.0 goes beyond currency, finance, even commerce, and all areas of our lives, including politics, social relations, ecation, medical care, etc. According to the prediction and conception of people in the instry, the era of blockchain 3.0 will be realized in the next five years. At that time, blockchain will be recognized and accepted by all the public like the Internet, thus completely subverting our lives
McKinsey has submitted a technical report on blockchain to the Federal Insurance Advisory Committee of the United States. The report calls 2009-2016 the "Dark Age" and believes that all blockchain solutions ring this period are based on bitcoin, and the new era of blockchain will begin in 2016. At that time, the application of blockchain will become unprecedented. Applying an original sentence in McKinsey report: Based on the current development speed of blockchain, we believe that blockchain solutions may realize their full potential in the next five years.
blockchain 1.0 mainly refers to bitcoin. Blockchain 2.0 extends to all assets, while blockchain 3.0 goes beyond currency, finance, even commerce, and all areas of our lives, including politics, social relations, ecation, medical care, etc. According to the prediction and conception of people in the instry, the era of blockchain 3.0 will be realized in the next five years. At that time, blockchain will be recognized and accepted by all the public like the Internet, thus completely subverting our lives
McKinsey has submitted a technical report on blockchain to the Federal Insurance Advisory Committee of the United States. The report calls 2009-2016 the "Dark Age" and believes that all blockchain solutions ring this period are based on bitcoin, and the new era of blockchain will begin in 2016. At that time, the application of blockchain will become unprecedented. Applying an original sentence in McKinsey report: Based on the current development speed of blockchain, we believe that blockchain solutions may realize their full potential in the next five years.
9. Ethereum is the most widely used public blockchain system supporting complete application development. Compared with bitcoin, Ethereum belongs to the category of blockchain 2.0, which is a redesigned blockchain system to solve some problems of bitcoin network. Why Ethereum? Because the design of bitcoin is only suitable for the digital currency scene, it does not have Turing completeness, and lacks the concept of saving the real-time status of the account, and there are problems of efficiency and resource waste caused by POW mechanism
the most critical problem is that in the business environment, there needs to be an efficient consensus mechanism, Turing completeness, support for smart contracts and other application scenarios. Therefore, Ethereum came into being in this situation, and its founder was called vitalik buterin. What are the characteristics of Ethereum? First of all, it is a universal global blockchain, that is, it belongs to the public chain, which is the same as bitcoin, and can be used to manage financial and non-financial applications. At the same time, Ethereum is also a platform and programming language, including the digital currency ether and the Ethernet script used to build and publish distributed applications, that is, the smart contract programming language.
the most critical problem is that in the business environment, there needs to be an efficient consensus mechanism, Turing completeness, support for smart contracts and other application scenarios. Therefore, Ethereum came into being in this situation, and its founder was called vitalik buterin. What are the characteristics of Ethereum? First of all, it is a universal global blockchain, that is, it belongs to the public chain, which is the same as bitcoin, and can be used to manage financial and non-financial applications. At the same time, Ethereum is also a platform and programming language, including the digital currency ether and the Ethernet script used to build and publish distributed applications, that is, the smart contract programming language.
Hot content