Force generation
You can refer to the following, according to some commonly used graphics cards in the Internet bar market, sort out the price and calculation power of a related graphics card, as well as the expected return to the current period, It can be used as a reference:
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power consumption: 243w
computing power: 22.4m
price of graphics card: 1999 yuan
quantity of eth g every 24 hours: 0.015
revenue generated every 24 hours: 24.48 yuan
expected payback time: 81.66 days
power consumption: 159w
computing power: 24.3m
price of graphics card: 1599 yuan Yuan
number of eth g every 24 hours: 0.017
revenue generated every 24 hours: 27.9 yuan
estimated payback time: 57.31 days
total power consumption: 171w
computing power: 24.4m
price: 1999 yuan
number of eth g every 24 hours: 0.017
revenue generated every 24 hours: 27.87 yuan
estimated payback time: 71.73 days
Video card (graphics card) full name display interface card, also known as display adapter, is the most basic configuration of computer, one of the most important accessories. As an important part of the computer host, the graphics card is the equipment of digital to analog signal conversion, and it undertakes the task of output display graphics
the graphics card is connected to the main board of the computer, which converts the digital signal of the computer into an analog signal for the display. At the same time, the graphics card still has the ability of image processing, which can help the CPU work and improve the overall running speed. For those engaged in professional graphic design, graphics card is very important. Civil and military graphics chip suppliers mainly include amd (ultra micro semiconctor) and NVIDIA (NVIDIA). Today's TOP500 computer, including graphics card computing core. In scientific computing, graphics card is called display accelerator
in the process of getting bitcoin through "mining", we need to find its corresponding solution M. for any 64 bit hash value, there is no fixed algorithm to find its solution M. we can only rely on the computer's random hash collisions. How many hash collisions can a mining machine do per second is the representative of its "computing power", and the unit is written as hash / s, This is the so-called proof of work mechanism (POW)
recently, bitcoin's network computing power has entered the era of P computing power (1P = 1024t, 1t = 1024g, 1g = 1024m, 1m = 1024k). In the ever-increasing computing power environment, the arrival of P era means that bitcoin has entered a new stage of arms race
computing power is a measure of the total computing power of the unit that generates new blocks under certain network consumption. The single blockchain of each coin varies with the time required to generate a new transaction block.
the so-called digital currency is actually the normal currency after digitization WeChat and Alipay's so-called scan code payment is not a real digital currency. The real digital currency is the currency that the payment devices of both sides can complete the payment operation after contacting. It has nothing to do with the Internet. For a simple example, the original paper money is stored in the wallet, and now the electronic money is stored in the mobile phone. When I paid, I took the note out of my wallet and handed it to the boss. Now when you pay, you just need to contact your mobile phone with the other's{ RRRRR}
in fact, the biggest advantage of digital currency is to facilitate supervision it can be said that every expense you spend is recorded by the central bank. In other words, if you buy a pair of shoes, the central bank will know immediately. So if criminals are really not open-minded, dare to use digital currency to launder money. Then the state can immediately let him know what a just mission is
① From concrete thinking to abstract thinking. Children's operation is always associated with specific things, and then graally separated from specific things, to the operation of letters, that is, algebraic expression, and then to more abstract symbolic operation, such as intersection and union of sets. Abstract degree of operational thinking is one of the main characteristics of the development of operational ability< (2) from comprehensive thinking to analytical thinking. At first, children's operation is a comprehensive thinking from condition to problem, from known to unknown. In the senior grade of primary school, we began to have analytical thinking from problems to conditions, from unknown to known. Analytical thinking is a difficult point that students must break through in order to further develop their computing ability. The training of application questions and proof questions plays an important role< (3) from intuitive thinking to conscious thinking. This is, children's operation from only know how to operate to understand and can say why to operate in this way, that is to say the idea of solving problems. Understanding the operation process is an important condition for correct and flexible operation and enhancement of migration< (4) from developing thinking to compressing thinking. Children's thinking in the process of calculation is initially carried out step by step. To skilled stage, then merge some steps, quickly get results or find solutions. Compressed thinking is an important condition for fast operation
⑤ from one-way thinking to reverse and multi-way thinking. Reverse thinking is a characteristic of mathematics learning. When children begin to learn mathematics, there are inverse operations. Later, there are more, such as subtraction for addition, factorization for multiplication, square root and logarithm for multiplication, inverse trigonometric function for trigonometric function, integral for differential, and so on. Due to the negative effect of thinking set, inverse thinking and inverse operations are difficult for students. Multi way thinking is to solve problems from different ideas. Reverse thinking and multi-directional thinking are important conditions to improve the flexibility of operation
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