1. "
computing power (also known as hash rate) is the unit of measurement of
bitcoin network processing power, that is, the speed at which the computer (CPU) calculates the output of hash function. In
mining, the better the computing power, the faster the mining speed of the mining machine. As for the computing experience of the mining platform, it's like you buy an apple, you have to taste it. I bought the machine on the golden hoe platform before. What they gave me was a month's computing experience, which should be high in the mining platform.
2. 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:
power consumption: 243w
computing power: 22.4m
price of graphics card: 1999 yuan
number 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
price of graphics card: 1599 yuan
every 24 hours Number of time digging eth: 0.017
revenue generated every 24 hours: 27.9 yuan
expected payback time: 57.31 days
video card of radon RX 480
3. Hello, you should be talking about the so-called computing power of some
blockchain platforms. Now, the algorithms of these platforms are uneven. The real blockchain platform in China is actually zero. This computing power is calculated according to the user's activity and some other statistical rates.
4. Take the free computing power jointly launched by the tenth power and computing earth, which mainly provides free computing power support for projects that need a large amount of computing power output. The computing power bank can provide idle computing power for personal devices around the world and provide computing power support for world-class scientific research projects, involving mathematics, physics, chemistry, life sciences, astronomy and other fields.
5. What he means is that he gave you some basic content in the manufacturing algorithm, so you should calculate according to that function.
6. At the end of 2017, digital currency experienced explosive growth and Waterloo like decline in 2018, and now it tends to be stable. During this period, a large number of investors poured into the currency circle, and all kinds of digital currencies need to be bought and sold through exchanges or digital currency wallets. However, in 2018, there were frequent incidents of exchange digital currency theft, so more and more traders chose to store digital assets in digital currency wallets, Sort out the five most well-known digital currency wallets and let's get to know them
Bitpai (score: 8.5)
bitpai is a comprehensive blockchain asset service proct based on HD wallet. Its main functions include: sending and receiving, buying and selling, accelerating transaction, etc. The user controls the private key, and the coin after the transaction is completed is directly kept by the user. At present, the currencies it supports mainly include BTC, BTC, ETH, some erc2.0 tokens, qtum, HSR, dash, safe, LTC, LCH, Zec, etc and Doge
advantages: the balance of the current digital currency can be displayed at the top of the front page of the wallet, and the upper left corner can be switched to other digital currencies, and the currency balance can also be switched from quantity to legal currency value. There are many functions in the middle, such as issuing currency, receiving currency, one click trading, etc. the broadcast of each transfer transaction is displayed below, and the completed transaction can also be queried in the transaction record. After leaving the bitpai app interface for a period of time, you need to unlock it when you re-enter, which improves the security of the wallet
deficiency: Only Mainstream currencies are supported, other small currencies are not supported, and the number of currencies is 10 +. The page setting is not user-friendly, and various parameters make it difficult for users to use. In addition, the security is worrying: Recently, there is a problem with bitpai IOS version, and the application can't be opened, and the official said: if you unload it carelessly, the assets in your wallet may not be recovered! It's still in Apple communication
download address: bitpie.com
2. Geek wallet (rating: 8.2)
geek wallet is a simple and convenient light wallet, which supports the storage and management of mainstream digital currency assets such as bitcoin (BTC), lightcoin (LTC), Ethereum (ETH), EOS, usdt, etc
advantages: high security factor, using local private key security mechanism, as well as mobile phone and computer al backup strategy, supporting the current mainstream currency, the platform has a jump market, which can carry out token trading of physical assets on the chain
deficiency: usdt transaction must use 0.0001 BTC as transaction handling fee, does not support some small currencies, page optimization is good, but the function is less
download address: www.geekwallet.org 、 www.geekwallet.cn
3. Imtoken (score: 8)
imtoken is a mobile light wallet app, which supports Eth and Ethereum erc2.0 standard tokens (such as EOS, DGD, SNT, qtum), and is a necessary wallet for Ethereum series of digital currencies
advantages: as a light wallet of Ethereum series, mtoken supports all the tokens of Ethereum erc2.0 standard, can control the miner's fee of each coin, can set the amount of collection, and has convenient transaction record query, refreshing interface, simple operation, so it is suitable for ICO investors who need to receive a variety of erc2.0 standard tokens and do not trade frequently
The "discovery" mole of wallet is not intuitive enough. 2. The tokens that can only be stored on the Ethereum platform, such as BTC and Neo, can't be stored. At the same time, the bifurcations of bitcoin can't be stored
download address: token. Im
4. Kcash (score: 7.8)
kcash is also a light wallet, which currently supports BTC, ETH, LTC, etc, act and digital currency based on Ethereum and achain smart contract platform. Kcash has cross chain and cross contract technology, and the supported currencies are still increasing
advantages: as a Multi Chain Wallet, kcash supports multiple types of digital currencies and is very friendly to users who invest in multiple series of digital currencies. In addition, kcash also has the function of sending red packets, and in the future, it will launch currency transaction, bank card connection and other functions
deficiency: too many features lead to poor usability. In addition, there are some problems with the compatibility of Android versions. Some Android models will flash back when they open the app
download address: kcash.com
5. Cobo (rating: 7.8)
Cobo is a professional digital asset management wallet, which can help you store assets safely, and the unique POS gain can help you increase the value of assets. It supports more than 20 kinds of digital assets including eth, EOS, TRX, and more than 500 kinds of tokens
advantages: Cobo security is in the lead in the same level, using multiple security verification, hot and cold separation storage, HSM multi signature, Cobo provides you with stable income through intelligent voting, dpos vote pool, POS mining digital asset gain matrix
deficiency: the page optimization is poor, the function is complex, it's a little difficult to get started, and there is also a flash back problem of Android version
download address: cobo.com
7. How to further improve students' computing ability, teachers, good morning: today I take this opportunity to exchange with you: in the review, how to further improve students' computing ability. When it comes to this topic, teachers will feel that it is just a matter of old talk. I think the more we grow up talking about things, the closer it is to our lives. The new curriculum standard also emphasizes that: to improve students' computing ability is helpful to establish students' mathematical literacy, to cultivate students' ability to solve problems, and to establish students' quality of being serious, meticulous, patient and fearless of difficulties. It can be reflected from the examination papers in recent years, especially last year, almost half (even 3 / 5) of the students in each class made mistakes in the calculation. What makes the teachers feel more sorry is that in the practical problems, the students managed to sort out their ideas, but they still fell down in the calculation. How to improve the calculation ability of students and let them calculate correctly, quickly, reasonably and flexibly? I will talk about my practice from the following six aspects: first, to cultivate the ability of oral arithmetic and lay a solid foundation. In my usual teaching, I pay great attention to observe the students who are slow in homework, whether they do not master the method or have difficulties in calculation. At this time, I found that there are still quite a number of students who add and subtract within 20, such as 7 + 15, 13-8 and so on, as well as simple integration and quotient, such as 13 × 2、60 ÷ Second, they have to list the vertical formula to calculate. What a waste of time! Therefore, to improve students' computing ability, it is very important to lay a good foundation for oral arithmetic. 1. We should pay attention to mastering the method of oral arithmetic. For example: using the composition of numbers to calculate the addition and subtraction method within 10; Use the rounding method to calculate the carry addition within 20; The reciprocal of addition and subtraction is used to calculate the abdication subtraction within 20; The multiplication formula is used to calculate the proct and quotient directly; According to the law of operation for oral calculation, etc. 2. Pay attention to the characteristics of mental arithmetic. For example: 398 + 45, you can take 398 as an integer of 400, add 45, and then subtract the extra 2, so that the heart and mouth can be united, and the calculation will be fast and accurate. I think this is very important, but it's very difficult for our students to do it. They always start to do it as soon as they get the topic. They always think it's unnecessary to observe and it's a waste of time! Here, our teachers should pay special attention to asking questions frequently, reminding frequently and strictly controlling. 3. Do a variety of mental arithmetic exercises. As we all know, the calculation problem has no vivid plot, so it is difficult to attract students' attention. Therefore, the only way to fully mobilize the enthusiasm of students is to have a variety of forms when practicing oral arithmetic. There are many forms of exercises, such as self arithmetic (looking for oral arithmetic problems in the textbook, and seeing how many courses you can count correctly within the specified time), mutual arithmetic (students work out questions and judge each other), oral arithmetic competition, rush answer competition, relay race, etc. these forms are lively and students like them very much. 4. Constant training. As the saying goes, if you want to develop a good skill, you must keep your fists together and keep your tongue in tune. So is the cultivation of oral arithmetic ability. It's a cumulative process, so I train every day according to different training contents, using noon counseling or 3-5 minutes before class. In our class, 20 courses of oral arithmetic training every day has become a habit of students. Only in this way can we achieve the ideal effect. 2、 Participate in the derivation of rules and formulas, and truly clarify calculation. In the process of students mastering calculation rules and formulas, I think we should try our best to guide them to practice and use their brains, and through their own practice, observation, and active exploration, so that they can have a deeper understanding of the process of acquiring knowledge. For example, when calculating the volume of a cone, many students tend to lose one-third of it. In teaching, I pay attention to guiding students to use the learning tools in their hands, and everyone can participate in the experiment. They can not only remember their own conclusions, but also use them freely.
