Local operation of Ethereum node

1. Eth mining mainly uses graphics card to mine. Therefore, you need a PC with the following devices:
graphics card, motherboard, power supply, CPU, memory, hard disk (more than 60g SSD is recommended), extension cable, adapter cable, etc
among them, the graphics card determines the speed of mining, and the motherboard and power supply largely determine the stability of mining machine operation.

2. Yes, but it is better to use overseas servers. In addition, the server configuration should be medium or above.

3. Generally speaking, undefined index is the exact writing problem in the process of writing. Notice generally prompts for errors that are not directly related to the execution of code, but don't forget that notice sometimes returns some rendant error information

4. How many account addresses can an Ethereum node have at most
A: generally, there is only one account address, otherwise there will be an error! blockchain itself is unique. If there are multiple account addresses on one node, it violates the fundamental principle of blockchain!

5. Eth is a kind of digital token of Ethereum. Developers need to pay eth to support the application. Ether currency, like other digital currencies, can be bought and sold on the trading platform
generally speaking, Ethereum is an open source platform, digital currency and blockchain platform, which provides developers with a platform to build on the blockchain

6. Ethereum source code

7. Go to the crater.
although the place is large,
the mines are relatively concentrated,
it won't let you go around.
moreover,
a vein can be g many times,
that's where it's a little scary

8. There is no problem at all, but relatively speaking, we must buy some reliable ones, because we must pay attention to them.

9. Swarm is a distributed storage platform and content distribution service, and a local service layer of Ethereum Web3 stack. The main goal of swarm is to provide enough decentralized and repetitive storage for Ethereum public records, especially DAPP code and data and block data. From an economic point of view, it will encourage some participants to concentrate their storage and bandwidth resources to provide the above services for other network members.