Floating computing power

1. At the beginning of 2017, the price of a 14.5t S9 mining machine was as high as 20000 yuan. Take the current market situation, the cost of investment and mining is very low. Moreover, according to the current issue price of HRT, the cost of the same computing power is only about one tenth, which is about more than 2000 yuan.

3. The computing power of CPU is related to the number of CPU cores, the frequency of core and the ability of single clock cycle of core
the ability of double precision floating-point computing is commonly used to measure the scientific computing ability of CPU, that is, the ability to process 64 bit floating-point data

the processor supporting avx2 can perform 16 floating-point operations in one core and one clock cycle, Also known as 16flops
CPU power = number of cores x frequency of cores x 16flops
processors supporting avx512 can perform 32 floating-point operations in one core and one clock cycle, also known as 32flops
CPU power = number of cores x frequency of cores x 32flops

4. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system

unlike all currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity

on December 17, 2017, bitcoin reached an all-time high of $19850. On July 27, 2020, bitcoin broke through the $10000 mark again [2]<

Chinese name
bitcoin
foreign name
bitcoin
type
encrypted digital currency
circulation platform
Network
founder
Nakamoto Cong

blockchain from Xiao to proficient
a total of 24 episodes
2196 heat
fast
navigation
founder

proction principle


monetary characteristics

monetary transaction
< br />
legal status

external evaluation
development history
What are blockchain and bitcoin< In 2008, the global financial crisis broke out. On November 1 of the same year, a person who called himself Satoshi Nakamoto published bitcoin white paper "bitcoin: a peer-to-peer e-cash system" on the P2P foundation website, stating his new idea of e-money bitcoin came out. On January 3, 2009, bitcoin Genesis block was born
there are three bitcoins in total
compared with legal tender, bitcoin does not have a centralized issuer, but is generated by the calculation of network nodes. Anyone can participate in the manufacture of bitcoin, and it can circulate all over the world. It can be bought and sold on any computer connected to the Internet. No matter where they are, anyone can dig, buy, sell or receive bitcoin, And in the transaction process, foreigners can not identify the user's identity information. On January 5, 2009, bitcoin, which is not controlled by the central bank and any financial institutions, was born. Bitcoin is a kind of digital currency, which is composed of a series of complex codes generated by computer. The new bitcoin is made by preset program
whenever bitcoin comes into the view of mainstream media, mainstream media always ask some mainstream economists to analyze bitcoin. Earlier, these analyses always focused on whether bitcoin was a scam. Now the analysis is always focused on whether bitcoin can become the mainstream currency in the future. The focus of the debate is often on the deflationary nature of bitcoin[ 7]
many bitcoin players are attracted by the fact that bitcoin can not be added at will. Contrary to the attitude of bitcoin players, economists have a polarized attitude towards the fixed amount of 21 million bitcoin
Keynesian economists believe that the government should actively regulate the total amount of money, and use the tightness of monetary policy to timely fuel or brake the economy. As a result, they believe that bitcoin's fixed aggregate currency sacrifices its adjustability, and worse still, it will inevitably lead to deflation, thereby harming the overall economy. Austrian economists hold the opposite view. They think that the less the government intervenes in money, the better. The deflation caused by the fixed amount of money is not a big deal, even a sign of social progress
bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system. Bitcoin network will automatically adjust the difficulty of mathematical problems, so that the whole network will get a qualified answer about every 10 minutes. Then bitcoin network will generate a certain amount of bitcoin as block reward to reward the person who gets the answer[ 6]
in 2009, when bitcoin was born, block rewards were 50 bitcoins. Ten minutes after its birth, the first 50 bitcoins were generated, and the total amount of money at this time is 50. Then bitcoin grew at a rate of about 50 every 10 minutes. When the total amount reaches 10.5 million (50% of 21 million), the block reward will be halved to 25. When the total amount reaches 15.75 million (5.25 million new output, i.e. 50% of 1050), the block reward will be further halved to 12.5.

5. "A lot of scripts" may not be the script of the button wizard, right? Is it an offline script? Is it a script for offline plug-ins?

6. E-cash can only be consumed by flash payment, so you can ask the local ICBC where there is a POS machine supporting flash payment, go to some cooperative merchants of ICBC, and support chip card consumption. We can do things like noodle king and Baiguoyuan. I don't know if you can do it. If you don't have it, you can only cancel the card. You need to withdraw the money from it

8. I often take long-distance bus station ~ it should be North District.. Sorry, I'm a little disoriented. Anyway, there's a KFC at the door. You just get out of the car and ask the police and security guard on the side of the road
there is a direct ticket luxury bus to Jining, which costs 69 yuan, plus 1 yuan insurance, that is 70 yuan. About 3 hours to Jining south station
if you have a student ID card, it will be about 5 yuan cheaper. If the train is full, it can start ahead of time. The last time I took the bus was half a month ago. There was a bus at 8:49 a.m. and one at less than 8:00 a.m. If it's in the peak season, such as the Spring Festival, it will be full soon and the train will start
Beijing Fuzhou Expressway is a direct route, passing by Changqing University Town, but I don't recommend stopping on the expressway. Although it's faster, it's not safe; Another direct ticket does not stop, and there are usually no seats when parking. And the ticket price will not be cheap

it's not a direct ticket. The price is about 50 yuan. I haven't been there before

in addition. The intermodal bus station opposite the railway station also has a bus to Jining. It's not direct. It doesn't take high speed. It's very slow. That bus goes to Jining north station, but it doesn't go into the north station. Stop at the No.35 bus stop opposite the north exit of the north station to let everyone off

hope to help you.

9. Since it's a bus station, there must be buses everywhere. If the ticket price is 60, it's recommended that you take the train
there are a lot of people, and you have to wait in line. It's a running train

JNK 06:40-18:20 about 32 minutes. A 24-hour Jining luxury bus (luxury) runs normally for 3 hours, and Jining bus terminal
1302 08:10 35 Jinlong Zhongke (intermediate) runs normally for 3 hours, South bus station
1306 08:50 35 Jining Zhongtong high class I (luxury) normal 3 hours
1303 09:30 35 Jining Guiyu high class I (luxury) normal 3 hours, south bus station
1304 10:20 35 Yutai Yutong (intermediate) normal 3 hours, south bus station
0264 11:20 31 Peixian shuchi Zhongke (intermediate) normal 4.5 hours, Peixian bus station, transfer to Lulou Fengxian city
1305 11:40 35 Jining Yutong high class 1 medium passenger (intermediate) normal 3 hours, south bus station
1825 12:00 35 Jiaxiang Zhongtong high class 1 large passenger (luxury) normal 3.5 hours, Jiaxiang bus station, 6:20 return
0106 12:30 32 Jinxiang Heke high class 2 large passenger (luxury normal 3.5 hours, bus station, 6: 50 return
0233 12:30 35 Jiaxiang Jinlong high class I (luxury) 3.5 hours, Jiaxiang bus station
1861 12:30 39 Yutai Hyundai (luxury) normal 4 hours, bus station
2561 13:00 35 Jiaxiang Yutong high class I (intermediate) normal 3.5 hours, Jiaxiang bus station
0483 13:00 39 Jining Jianghuai high class I (luxury) normal 3 hours, At south bus station
0104 13:40 36, Jinxiang hekegao grade 2 medium passenger (luxury) is normal for 3.5 hours, at bus station, return at 7:40
0186 13:50 39, Yutai Jinlong grade 1 medium passenger (luxury) is normal for 4 hours, at bus station
2562 14:00 35, Jiaxiang Zhongtong grade 1 large passenger (luxury) is normal for 3.5 hours, at Jiaxiang bus station
1867 14:30 35, Yutai Yutong grade 1 large passenger (luxury) is normal for 4 hours, Bus station
1826 15:00 35 Jiaxiang Zhongtong high class I (luxury) normal 3.5 hours, Jiaxiang bus station
0118 15:00 39 Jining Zhongtong high class I (luxury) normal 3 hours
0107 15:20 36 Jinxiang Heke high class II (luxury) normal 3.5 hours, bus station, 8:30 return
1862 16:00 39 Yutai Jinlong (intermediate) normal 4 hours, Bus station
2563 16:00 35 Jiaxiang Zhongtong high class I (luxury) normal 3.5 hours, Jiaxiang bus station, 8:50 return
2291 16:30 35 Jiaxiang Jinlong high class I (luxury) normal 3.5 hours, Jiaxiang bus station
0120 17:20 35 Jining Hyundai (luxury) normal 3 hours, south bus station
3477 18:10 35 Jiaxiang Guiyu (luxury) normal 3 hours, South bus station
3271 19:00 31 Xinyang shuchi high passenger (luxury) normal 12 hours, Xinyang central station
y304 19:20 32 Yucheng shuchi medium passenger (intermediate)

10. Jinan railway station square opposite there is a long-distance station, where there is a long-distance bus to Jining