Power supply of a851 mining machine
the power consumption of bitcoin mining machines is different according to different machines take Shenma 68T, the fastest mining machine in wet season, as an example. Suppose that the electricity charge is 0.22 per kilowatt hour in half a year in wet season and 0.34 per kilowatt hour in dry season, the wall power consumption of Shenma 68T's second-hand machine is 3264w, and the actual power consumption is 3500W, then the daily power consumption of a Shenma M20S 68T machine is 3.524 = 84 degrees, Annual power consumption 84 * 365 = 30660 degrees
according to the latest mining difficulty, a Shenma 68T machine can dig 0.00064836 BTC a day, and 10 machines can dig 2.366514 coins a year. The mining difficulty of the premise remains unchanged, but according to the current situation, it is assumed that the mining difficulty will increase by 30% from now to next June, and by 2.5% every month. It is estimated that 85% of the original coins should be g, that is, 2.012 coins. Ten machines of Shenma 68T can dig almost 2 coins a year
to sum up, the power consumption of ten Shenma 68T machines in a year is 306600 kwh, which can dig almost two coins
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the risk of mining machine
1. Hardware expenditure
< P > mining is actually a competition of performance and equipment. Some mining machines are composed of more such graphics card arrays. With tens or even hundreds of graphics cards, the hardware price and other costs are very high, There is considerable expenditure in miningin addition to the display card burning machines, some ASIC (application specific integrated circuit) professional mining machines are also put into the battlefield. ASIC is specially designed for hash operation, and the computing power is quite strong. Moreover, because their power consumption is far lower than that of the display card, they are easier to form scale, and the power cost is also lower. It is difficult for single chip display to compete with these mining machines, This kind of machine costs more
2. Currency security
the withdrawal of bitcoin requires hundreds of keys, and most people will record this long string of numbers on the computer, but the frequent problems such as hard disk damage will make the key permanently lost, which also leads to the loss of bitcoin
3. System risk
system risk is very common in bitcoin, and the most common one is bifurcation. Bifurcation will lead to a drop in currency price and a sharp drop in mining income. However, many cases show that the forking will benefit the miners, and the forked competitive currency also needs the miners' computing power to complete the minting and trading process. In order to win more miners, the competitive currency will provide more block rewards and handling charges to attract miners. Risk makes miners
Amazon; NASDAQ: AMZN) is the largest online e-commerce company in the United States, located in Seattle, Washington. Amazon is one of the first companies to start e-commerce on the Internet. Founded in 1995, Amazon began to only sell books on the Internet. Now it has expanded to a wide range of other procts. It has become the online retailer with the largest variety of goods in the world and the second largest Internet enterprise in the world. Under the name of the company, it also includes alexainternet, A9, lab126, amazon.com, amazon.com and amazon.com And Internet Movie Database (IMDb)<
Amazon and other retailers provide customers with millions of unique new, refurbished and second-hand goods, such as books, movies, music and games, digital downloads, electronics and computers, home gardening procts, toys, baby procts, food, clothing, shoes and jewelry, health and personal care procts, sports and outdoor procts, toys Automobile and instrial procts, etc.
1. Porting QTE to embedded device means porting embedded version of QT to embedded device to ensure that the device can normally enter GUI mode after startup.
2, Use Qt library to draw a small interface with several buttons on it.
3. Connect the click event of button with the function of controlling motor speed and direction with signal and slot.
4. Compile makefile file, cross compile and download it to the board to run.
it is suggested that the owner should compile it on PC first, Debug the operation of the button. Can you activate the function you implemented, and then download it further. Detailed reading of the relevant help documents can also help you solve the problem ~ have a good time~
Inflation is an important means for the bourgeoisie or the ruling class to strengthen the exploitation and plunder of the grassroots working people. Inflation first brought great disaster to workers and farmers. It makes the price rising and the purchasing power of money declining
as a result, the real wages of the workers dropped sharply and their lives became increasingly poor. However, small procers such as farmers expand the "scissors gap" of instrial and agricultural procts in the process of price rise
They have to buy the means of subsistence of capitalist instrial proction at a high price and sell their agricultural procts and handmade procts at a low price, so they are even poorerinflation has also seriously affected the lives of ordinary public servants and intellectuals, because their salaries can not be increased according to the degree of price rise. However, inflation has brought great benefits to the monopoly bourgeoisie
they will not only transfer most of the income plundered by the bourgeois state from the working people with indiscriminate paper money to their own pockets through government orders and price subsidies
Moreover, we can make use of the decline of real wages, or use devalued currency to repay debts, and take advantage of soaring prices to hoard and make huge profits 
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the difference from deflation
1. The meaning and essence are different: inflation refers to the economic phenomenon that the amount of paper money issued exceeds the amount needed in circulation, resulting in the devaluation and price rise of paper money. Its essence is that the total social demand is greater than the total social supply
deflation is an economic phenomenon opposite to inflation. It refers to an economic phenomenon in which the general price level continues to decline and the currency continues to appreciate for a long time in the period of relative economic contraction. Its essence is that the total social demand is less than the total social supply
The most direct manifestation of inflation is the devaluation of banknotes, the rise of prices and the decrease of purchasing power. Deflation is often accompanied by a decline in proction and a contraction in the marketthe profit rate of enterprises decreases, proction investment decreases, unemployment increases, income decreases, and economic growth is weak. The main performance is that the prices are low and the prices of most goods and services are falling
The main cause of inflation is that the total social demand is greater than the total social supply, and the amount of money issued exceeds the amount of money actually needed in circulation. The main causes of deflation are that the total social demand is less than the total social supply, the long-term unreasonable instrial structure, the formation of a buyer's market and export difficulties The harm is different: inflation directly devalues banknotes, if the income of residents does not change, the living standard will decline, resulting in social and economic life disorder, which is not concive to economic development However, in a certain period of time, moderate inflation can stimulate consumption, expand domestic demand and promote economic development. Deflation leads to the decline of prices, which is good for the life of residents to a certain extent But in the long run, it will seriously affect the confidence of investors and the consumption psychology of residents, lead to vicious price competition, which is not concive to the long-term economic development and the long-term interests of the people Different governance measures: the most fundamental measures to control inflation are to develop proction and increase effective supply. At the same time, we should take measures to control money supply, implement moderately tight monetary policy and fiscal policy to live within our means To control deflation, we should adjust and optimize the instrial structure, comprehensively use investment, consumption, export and other measures to stimulate economic growth, implement positive fiscal policy, steady monetary policy, correct consumption policy, and adhere to the principle of expanding domestic demand Both of them are caused by the imbalance between the total social demand and the total social supply, that is, the imbalance between the amount of money actually needed in circulation and the amount of circulation Both of them will distort the price signal and affect the normal economic life and social economic order, so we must take effective measures to restrain themI won't focus on external appreciation. If you can raise this question, it shows that you have a lot of research on it. My understanding of internal appreciation is that with the rapid growth of the domestic economy, some disadvantages and problems are constantly emerging, but every time they are suppressed by the government and the state, which is the role of the state. In fact, after 30 years of steady and rapid development, the Chinese government has been excellent. Therefore, the current price rise and the devaluation of RMB is actually the outbreak point of 30 years of domestic contradictions. Rising prices are just a fuse. Just like Zhou Xiaochuan's speech at Tsinghua University, steady development is not normal. Development in crisis is normal. Therefore, one is the intensification of international contradictions, the other is the intensification of domestic contradictions. The confluence of these two contradictions will lead to the current situation in China. I hope I can answer your question.