Ethereum ens

1. Ethereum is an open source public blockchain platform with smart contract function. Ethernet provides decentralized virtual machine to process point-to-point contract through its special cryptocurrency

2. "Blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. The so-called consensus mechanism is a mathematical algorithm to establish trust and obtain rights and interests between different nodes in the blockchain system. "
I. the meaning of blockchain
in a narrow sense, blockchain is a kind of chained data structure composed of data blocks connected in sequence according to the time sequence, and it is a distributed account book that can not be tampered with and forged by means of cryptography
broadly speaking, blockchain technology is a new distributed infrastructure and computing paradigm, which uses blockchain data structure to verify and store data, uses distributed node consensus algorithm to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses intelligent contract composed of automated script code to program and operate data
ENS is Ethereum domain name service, a distributed, open and extensible domain name system based on Ethereum. Some hash addresses used in Ethereum ecosystem are usually very long, such as Ethereum wallet address and swarm file hash address, while ENS domain name system is designed to provide users with short and easy to read domain names. Ens does not grant any trademark or declare any ownership. The domain name application of ENS is a completely decentralized process. The domain name is not obtained through purchase. You need to deposit a certain amount of ether coin in the corresponding registration contract as a deposit for at least one year. In order to avoid garbage and meaningless operation, the process of auctioning domain names includes locking deposit and destroying penalty, trying to ensure that the domain name will be registered by the actual user. The ether money spent in the process will eventually be returned to the successful bidder and destroyed in breach of contract. It will not generate income and is completely non-profit.

3. I know whether Ethernet is the same thing. It's just a name of network communication materials. It's the same thing as broadband Internet. It's only different in units and categories. It's essentially an attribute of physical substances. That's all I know. And recently, I won't give a reward.

4.

[why use address book]

both the address of Ethereum and the address of bitcoin are a string of hash values. Due to the low recognition, users are prone to misaddress. The solution to this problem can start from two points: 1. Use the ENS domain name; 2; 2. Use the address book to store the common transfer address. However, the popularity of ENS domain name is low, and there is no & quot; One for each person;, So address is a better solution

[how to add address]

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Click & quot; I & quot-& gt; & quot; Address book & quot



5. The switch signal and analog signal of field instrument and equipment are connected to the corresponding signal input mole (AI, Di, TC, RTD) through cable, and then the mole completes the signal acquisition, sends the collected data to the controller (CPU) through communication, the CPU completes the data conversion, interlocking, etc., and sends the data to the upper computer (computer); The upper computer is mainly used for data display and operation. The CPU receives the operator's operation command and internal interlocking, and transmits the signal to the output mole (AO, do). The output mole sends the signal to the equipment through the cable to complete the switch and adjustment of the equipment.