What's the name of a digger

1、 mining principle

at the beginning, we could dig bitcoin with the computer CPU. The founder of bitcoin, Nakamoto Tsung, g out the world's first creation block with his computer CPU. However, the era of CPU mining has long passed, and now bitcoin mining is the era of ASIC mining and large-scale cluster mining

looking back on the mining history, bitcoin mining has gone through the following five times: CPU mining → GPU mining → FPGA mining → ASIC mining → large-scale cluster mining, The mining speed changes are as follows:

CPU (20mhash / s) → GPU (400mhash / s) → FPGA (25ghash / s) → ASIC (3.5tash / s) → large scale cluster mining (3.5tash / s * x)

mining speed, which is called computing power in professional terms, that is, the ability of computer to generate hash collisions per second. In other words, how many hash collisions can our miner do per second is the calculation force. Computing power is the ability to dig bitcoin. The higher the computing power, the more bitcoin you dig, the higher the return

in the world of bitcoin, a data block is recorded about every 10 minutes. All mining computers are trying to package the data block and submit it, and the person who successfully generates the data block will get a bitcoin reward. Initially, bitcoin rewards of 50 bitcoins could be generated about every 10 minutes. But the payment is halved every four years, and now the bitcoin network can generate 25 bitcoins every 10 minutes

to successfully generate data blocks, miners need to find the effective hash value. To get the correct hash value, there is no shortcut. You can only guess. The process of guessing is the process of computer random hash collision. If you guess correctly, you will get bitcoin

< EM > Figure 3: Mine Map (scale of tens of thousands of mining machines) < / EM >

nowadays, the profit space of small and medium-sized absenteeism who take one mining machine home or deploy a small family workshop (dozens of mining machines) is very limited, and the mining instry is graally concentrating on enterprises and teams with low-cost power resources and professional deployment ability

there are many factors that affect the mining revenue, such as the performance and power consumption of mining machinery, the computing power and difficulty of the whole network, the deployment and operation and maintenance capacity of the mine, the availability of low-cost electricity resources, and the currency price and policy guidance, etc. At present, excellent mining enterprises have the ability of chip research and development, a lot of computing power, professional mine deployment and operation experience, etc. in the future, resources and computing power will be more and more concentrated in these mining enterprises

2. Mine pool

in addition to the above equipment, you also need a necessary tool - mine pool. The function of the mine pool is to gather a large amount of mineral computing power, increase your probability of getting bitcoin, and at the same time, distribute your future bitcoin income to your account in advance

the simple explanation is as follows: now the bitcoin network generates a block every 10 minutes, which contains 25 bitcoins. Suppose there are 1W people in the world participating in mining, then in these 10 minutes, only one lucky person has taken these 25 bitcoins, and the others have nothing. The principle of the mine pool is that everyone mines in teams and distributes according to the agreed distribution method, so that the income of the miners' bitcoin tends to be stable and the risks of the miners are reced. Let's take the most common PPS allocation method as an example. Suppose that your computing power is 10t, and the computing power of the whole mine pool is 100t. Your computing power accounts for 1 / 10 of the total computing power of the mine pool. Suppose that the mine pool can generate 10 bitcoins a day, then you can get 1 bitcoin a day

3. Cloud computing power

in reality, the supply of mining machines often exceeds the demand, and at the same time, the delivery of mining machines needs a long waiting period. Miner installation, commissioning, maintenance and other processes are very complex, which requires a lot of energy. Miners have to enre the noise and heat of miner. For miners, the biggest cost is not these, but the high electricity charges consumed by mining. The profit space of small and medium-sized miners is getting smaller and smaller, even negative

Mining income = generated bitcoin * currency price - mining machinery cost - electricity fee - custody fee

if you are just a small miner, generally you only need to dect mining machinery cost and electricity fee

Mining risks are as follows:

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This is the largest excavator in the world. It is 95 meters high, 215 meters long and weighs 45000 tons. It can be called the world's top excavator. It is made by Krupp company of Germany and is on its way to the destination (a coal mine under excavation). It's cheaper to move the machine this way than to reassemble it in the coal mine. Specifications: height: 95m, length: 215m, covering an area of about 2.5 football fields, weight: 45000 tons; Such a huge object is also quite efficient in its work. The excavation speed is 10 meters per minute and 76000 cubic meters of coal can be collected every day. Its design and manufacture time is as long as five years, and it needs five people to operate. The diameter of the bucket wheel is more than 70 feet, and there are 20 buckets in total. Each bucket can bear more than 530 cubic feet (soil, etc.), and a 6-foot-high person can stand in the bucket. The excavator relies on 12 wheels for moving forward (each wheel is 12 feet wide, 8 feet high, 46 long), After four, the top speed of the excavator is three hours a mile. It's spectacular from a distance< This mini excavator is 80cm wide, 1.3m high and weighs only 0.8t. It is manufactured by Shandong Hengyuan excavator Co., Ltd. with a bucket capacity of 0.05m3. It is mainly suitable for indoor, underground pipeline, orchard greening and other small working environment. If compared with the largest excavator, the mini excavator can be used for indoor, underground pipeline and orchard greening, It's the size of a big elephant and an ant. If you drive the smallest one and meet this big Mac, you should feel like you're on an alien planet

Fluorite, also known as fluorite, is a kind of mineral, also known as soft crystal, colorful gem, rainbow gem, dream stone, etc. Its main component is CaF2, which contains more impurities. Fluorite in nature often shows bright colors, and its hardness is lower than that of a knife. It can be used as gemstone and night pearl, but most radioactive materials are usually harmful to human body

Bus line: No.48, the whole journey is about 9.1km.

1. Walk 960m from Honglou community to the North Station of Shanda road

2. Take No.48, go through 13 stops, and reach the Convention and Exhibition Center Station (or take No.39)

3. Walk 430m to Jinan Shungeng International Convention and Exhibition Center