Production of Ethereum system

1. At the top of Ethereum is DAPP. It exchanges with the smart contract layer through Web3. JS. All smart contracts run on EVM (Ethereum virtual machine) and use RPC calls. Below EVM and RPC are the four core contents of Ethereum, including: blockchain, consensus algorithm, mining and network layer. Except DAPP, all other parts are in the Ethereum client. The most popular Ethereum client is geth (go Ethereum)

2. Hello
Ethereum is the main network, and Ethereum is the currency in it (my home), but now it is basically called Ethereum or eth or Ethereum, and it is rarely called Ethereum (we do). Coin an is a digital asset exchange, in which trading needs to transfer the currency to their platform wallet for operation (other people's home)
about realization: ether belongs to the mainstream currency. Realization is no problem, at least it will not run away. The rise and fall of this kind of virtual assets is still quite large. If you are not keen on finance, you should be prepared for loss. If you want to invest, you should be cautious
Mr. Yuan Wang is engaged in the development of digital asset blockchain system. If you need to develop it, you can search "Mr. Yuan Wang" on the Internet for detailed communication

3. 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.

4. My computer - & gt; Attribute - & gt; Advanced - & gt; Environment variables - & gt; Add the following environment variables to the system variables:
java_ The home value is: the directory where JDK is installed, and mine is C: &# 92; Program Files\ Java\ jdk1.6.0_ 34
the classpath value is:;% JAVA_ HOME%\ lib\ tools.jar;% JAVA_ HOME%\ lib\ dt.jar;% JAVA_ HOME%\ bin;( Pay attention to the & quot& quot; To add)
Path: append at the beginning.;% JAVA_ HOME%\ bin;% JAVA_ HOME%\ jre\ bin;( Pay attention to the & quot& quot; To add)

after the installation, you can check whether the JDK is installed successfully. Open the CMD window and enter Java – version to view the version information of JDK.

5. Xu Mingxing, He Yi and Zhao CHANGPENG<

Xu Mingxing: founder of okcoin, technical otaku, and now CEO of the company

He Yi: former host of a tourism channel, later joined okcoin, mainly responsible for participating in some instry activities and promotion activities, and now is the vice CEO of the company<

Zhao CHANGPENG: he used to be the head of blockchain China, a world-famous online wallet. Later, he moved to okcoin, mainly responsible for the development of platform technology and projects

this is the legendary bitcoin tiantuan of okcoin

in the bitcoin mining instry, Zhang Nangeng is the founder of Avalon. It is his mining machine that has completely subverted the bitcoin mining instry and is currently deploying large-scale mines.

6. What is the relationship between chip and semiconctor? In short, semiconctors are materials, and chips are applications of semiconctors. From the perspective of instrial chain, it should be like this

semiconctors are divided into three categories: semiconctor material support, semiconctor material manufacturing and semiconctor material application<

semiconctor materials proce semiconctor components, which can be divided into four categories: integrated circuits, discrete devices, sensors and optoelectronics. Chip is the proct of integrated circuits, and chip, integrated circuit, IC and chip all refer to the same thing

chip classification chips can be classified from many aspects: 1. Processing signal classification: analog signal chip, digital signal chip 2. Application scenario classification: civil level, instrial level, automotive level, military level, aerospace level PS: each level has different requirements in circuit design, process processing and system cost 3. Manufacturing process classification: 7Nm, 10nm, 14nm..... 4 Use function classification: GPU, CPU, FPGA, DSP, ASIP, soc... Classify chips and semiconctors as follows: chip label<

Zhaoyi Innovation: the leader of domestic memory chip design jingjiawei: the leader of domestic GPU chip Jiangfeng Electronics: the leader of domestic semiconctor target Yangjie Technology: the leader of domestic semiconctor discrete devices

SMIC International (Hong Kong stock): the leader of domestic silicon wafer OEM Sanan optoelectronics: the leader of domestic LED chip

North Huachuang: the leader of domestic semiconctor equipment

Zhichun Technology: high purity process system integration provider (the only one in a share)

Zhongke Shuguang: the leader of domestic high performance computer

Ziguang Guoxin: storage design + FPGA, China's leading supplier of integrated circuit chip design and system integration solutions, After Apple)

Schlumberger: LED lighting driver + household appliance inverter motor control chip, IDM high-quality enterprise

Changdian Technology: domestic chip sealing and testing leader

others, Jingfang technology, Guoke micro, Changchuan technology, Taiji instry, Tongfu micro, Beidou Xingtong, nastar, Yake technology, Naiwei technology, Wansheng Co., Ltd