How to increase computer computing power

1. In mathematics teaching, the accuracy of students' calculation has always been the main problem affecting students' performance. Many students always think that calculation problems are much easier than analytical application problems, and they have a solid knowledge of some rules and laws, so calculation is easy. Therefore, they are overconfident or unable to concentrate in calculation, and the results are full of mistakes, I pay special attention to the calculation practice. Strengthen the calculation practice, improve the calculation ability, so as to improve the performance of 20% of the students. In junior high school mathematics teaching, the topics related to the calculation content account for more than 55% of a test paper, Effectively improving the accuracy of calculation is a very important aspect of junior high school mathematics teaching.
the significance and importance of calculation.
1. Calculation is the cornerstone of learning mathematics. Mastering calculation opens the door to the kingdom of mathematics. In teaching practice, there is such a phenomenon: although many students master the calculation method, they often make mistakes in calculation, The accuracy rate of calculation is very low. It not only directly affects the learning effect of word problems and application problems, but also seriously hinders the improvement of students' mathematics performance. Therefore, we must improve the accuracy rate of students' calculation. 2. Number and calculation will accompany one's whole life. A person needs to learn all the mathematics knowledge when he is an alt in middle school, Second, the reasons for the low accuracy rate of calculation.
1. When students analyze the causes of wrong questions, they often make mistakes, such as "reading wrong questions and ing wrong ones", "writing scribbled and ambiguous", "not making draft when calculating, adding or subtracting one digit leads to wrong whole questions", It seems that most of the reasons are as follows: & quot; Carelessness & quot; What is the cause of "carelessness"? There are only two aspects: one is that students' psychological quality is not mature enough, the other is that they have not formed good study habits. Therefore, cultivating students' good study habits is not only the requirement of quality ecation, but also the premise of improving the calculation accuracy.
2. At the same time, some students' calculation accuracy is not very high, It also reflects that the computing ability of these students needs to be improved (for example, they are not familiar with multiplication formula, carry addition and so on); It may lack a good habit of calculation, such as the habit of checking calculation. Many students ignore the role of "estimation" in calculation. This may have something to do with our usual teaching practice.
Third, measures to improve the accuracy of calculation, It is very necessary to correct the calculation errors and improve the accuracy of calculation to cultivate students' good learning attitude and calculation habits, and then improve the quality of teaching.
2. Do a good job of demonstration and teaching by words and deeds. The teacher is the example of students. In class, the board performance is in line with the norms, so as to achieve both oral and personal teaching, Teachers who require students to do it must do it first.
3. Encourage and persevere constantly. It takes a long time to form a good habit of calculation. To make the strict requirements persist, students must be encouraged to recognize the strict requirements of teachers and keep a lasting interest in implementing the calculation specifications, Students: 1, in accordance with the general order of calculation. Make clear the meaning of the problem, observe the characteristics of the problem, determine the order of calculation. 2, to develop a good habit of serious calculation. Clear data, draft in accordance with a certain order. 3, can not blindly pursue high speed. Rather slow than wrong, rather less than excessive.
4, specific methods:
1, strict calculation process, Standardizing the calculation of draft is the guarantee to improve the accuracy of calculation. Students are required to have standard calculation format, neat and correct writing, and neat homework and test papers. Draft is a necessary means for correct mathematical calculation, and many calculation errors are caused by Scribble and disorder of draft. In teaching, draft also requires students to write neatly and orderly, and try to do oral calculation as much as possible, Students are required to make a draft according to their usual requirements. The paper can be folded in half, and the draft should correspond to the questions. This is concive to students' self review in an orderly way, and there is no need to spend more time rewriting the draft. It saves time and effort to check directly. It is concive to cultivating students' rigorous, meticulous, honest and serious homework habits, overcoming the bad habit of scribbling and littering drafts, and helping teachers find and analyze the causes of errors, To help students to correct and control the future teaching.
2. To make students form a good habit of calculation, we must be strict, careful and persistent; If there are nonstandard calculation errors in the test, we should give detailed comments and teach methods in class; Students with repeated errors should be given a "small stove". Self check and mutual check should be carried out on the implementation of calculation specifications, so as to cultivate students' rigorous style of study from time to time and everywhere. At the beginning, students should correct drafts in detail as they do homework, and students should correct mistakes in drafts seriously. When students graally develop the habit, they should change detailed ones into simple ones, and simple ones into random ones, To sum up, the formation of good calculation habits of students, first, strict requirements, strict training. Second, to teach students some methods to make calculation correct and effective. Third, to actively ecate and encourage students to establish the confidence that they will be able to calculate correctly in psychology, and strive to calculate correctly in behavior, Will be able to promote students to improve the accuracy of calculation

2.

Many students feel headache for mathematics, because the score of mathematics is not high every time, and many knowledge points are not very clear, so how can junior high school mathematics learn to effectively improve the score

how to learn junior high school mathematics can effectively improve scores

knowledge framework diagram

I believe that as long as the above points are achieved, there will be some changes in the score of this subject. Of course, in learning, planning is essential. No matter review or study, you need to make a professional plan to help yourself learn. In addition to the above points, the score of mathematics will make considerable progress, In learning, if you encounter problems that you can't solve, you need to ask for help from teachers or better students in time, so that you can solve the difficulties and won't have an impact on future learning. The above is how to learn junior high school mathematics. I believe that if you do well in these points, the overall score of each subject will rise

3. A price limit order is a transaction based on the price you set. Sometimes we judge that the price will rise, but it will fall before it rises. That is to say, in a later period of time, the price will be lower than the current market price, and then it will enter an upward trend. Therefore, the direction of trading is definitely to be long, but in order to get a better price, you can hang a limit order. Although the set price is below the market price (the limit order can only be set below the current market price), once the set price appears in the future, the hanging order will be turned into a market order and executed. The same logic applies to limit order, but the direction is opposite. Stop loss list is your own investment strategy. You can sell the stop loss to what extent the stock falls. Sometimes we will use the break through trading system. For example, when the price breaks through the resistance level, it can be determined that it is an upward trend. At this time, we can use the stop loss to pay. The set price will be above the current market price (the stop loss order can only be set above the current market price). Once the set price appears in the market, that is, breaking through the resistance level, the order will be converted into a market order. Stop loss selling is the same logic, but in the opposite direction. The most important thing in stock speculation is to master certain experience and skills, and make accurate judgments. If a novice is not familiar with the operation, he can use a simulation disk to practice for a period of time to sum up experience,

4. In chain answer:
ICO is a way to invest in early-stage projects with cryptocurrency. Corresponding to IPO, ICO is also a kind of "public offering" in essence. It only changes the subject matter of IPO from securities to digital cryptocurrency
with the increasing popularity of blockchain, there are more and more ICO projects, but most of the ICO projects are not applied, or even have no application direction, just a simple white paper. Such ICO projects are almost unreliable
in many domestic ICO projects, there are many reliable ones that have been completed and have not yet started. The price of its token varies from high to low, including printing chain, etc. with anti-counterfeiting traceability as the starting point, it will build a general public chain for commercial applications
however, with the increase of ICO projects, the inevitability of being regulated also highlights. Only the real landing application can carry out ICO in the future and survive for a long time.

5. The work done by gravity is related to the initial and final position of the object, but not to the path

work w = - Mg * (z2-z1) = - 100 * 9.8 * (2-8) = 5880 (Jiao)

[welcome to inquire, thank you for adopting!]

6. There are different instruction sets.
if you play 360 games with PC through simulator,
you are in a circle.
you should understand the story of tortoise and rabbit race

7. In the process of using XP, the running speed of the system will become slower and slower with the passage of time. Some friends may think of reloading the system, but after reloading, the common application software also needs to be re installed, which may be more troublesome. How to speed up XP without re installing the system

as long as you operate according to the following nine aspects, I believe your XP will run at a high speed again

first, speed up the startup and shutdown speed

in Windows XP, the system will send a message to the running program and remote server to tell them that the system needs to shut down, and wait for the response before the system starts to shut down. To speed up the startup speed, you can set the auto end task first

1. Find HKEY first_ CURRENT_ Set the key value of autoendtasks to 1 in UserControl panel desktop

2. Next, there is a "hungapptimeout" under the branch. Change its value to "4000 (or less), and the default value is 50000

3. Finally, find HKEY_ LOCAL_， Similarly, set waittokillservicetimeout to "4000"; Through this setting, the shutdown speed is much faster< Second, improve the speed of broadband

professional version of Windows XP retains 20% of the bandwidth by default, which actually has no effect on our indivial users. In particular, it is better to make full use of it

enter gpedit.msc in "start → run" to open the Group Policy Editor. Find "computer configuration → management template → network → QoS packet scheler", select "limit reserved bandwidth" on the right, select "properties" to open the limit reserved bandwidth Properties dialog box, select "enable", and change the original "20" to "0", thus releasing the reserved bandwidth< When using Windows XP network neighborhood, the system will search its own shared directory, printers that can be used as network share, scheled tasks and network related scheled tasks, and then display them. Obviously, the speed will be much slower. If these functions are of little use to us, we can delete them. Find HKEY in the registry editor_ LOCAL_ ， Delete the (printer) and {d6277990-4c6a-11cf8d87-00aa0060f5bf} (scheled task), restart the computer, visit the Internet neighbor again, you will find that it is much faster< Fourth, speed up the startup speed

to speed up the startup speed of Windows XP. You can achieve this goal by modifying the registry. In the registry editor, find HKEY_ LOCAL_ Managermemory managementprefetchparameters, find the enable prefetcher primary key on the right, and change its default value of 3 to 1. In this way, the scrolling time of the scroll bar will be reced< Some times, XP will prompt you to stop responding. It's very annoying. By modifying the registry, we can let it close by itself. In HKEY_ CURRENT_ Change the value of the character key value of autoendtasks to 1 in the user control panel desktop, and then log off or start again< In order to speed up the display speed of the menu, we can set it according to the following methods: we can set it in HKEY_ CURRENT_ Find the "menusholdelay" primary key under the user control panel desktop and change its value to "0" to speed up the menu display< 7. Clear the unused DLL files in the memory_ LOCAL_， Add an item alwaysunloaddll in Explorer. The default value is set to 1. Note: if the default value is set to 0, the function will be disabled< 8. Speed up the pre reading ability and improve the startup speed

Windows XP pre reading setting can improve the system speed and speed up the startup speed. The following modification can further make good use of CPU efficiency: HKEY_ LOCAL_ In the window on the right of prefetchparameters, change the numerical data of the enable prefetcher as follows: for example, if the PIII 800MHz CPU is used, it is recommended to change the numerical data to 4 or 5; otherwise, it is recommended to keep the numerical data as the default value, that is, 3< 9. Rece the number of items to be loaded ring startup. Many applications will be added to the system startup group at the time of installation, and the system will run automatically every time. This not only prolongs the startup time, but also consumes the system resources after startup

start the "system configuration utility". The "start" item lists the items and sources loaded when the system starts. Carefully check whether you need it to load automatically. Otherwise, clear the check box before the items. The fewer items loaded, the faster the startup. This item needs to be restarted to take effect< If you want to access the Internet easily and smoothly, do you notice that the available space of your computer system disk is decreasing day by day? Is it like the old monkey king that moves slowly day by day

Yes! In the process of windows installation and use, there will be a lot of junk files, including temporary files (such as *. TMP, *_ MP) log files (. Log), temporary help files (. GID), disk check files (. Chk), temporary backup files (such as *. Old, *. Bak) and other temporary files. Especially if the temporary Internet Files folder of IE is not cleaned up for a period of time, the cache files in it sometimes occupy hundreds of MB of disk space. These LJ files not only waste valuable disk space, but also make the system run slowly. I'm sure you can't stand this!

8. In fact, reaction speed is to practice, to learn some quick calculation methods can improve the sensitivity to numbers
do more calculation problems, such as sequence, solid geometry (building system to solve problems), function or analytic geometry
in addition, the ability of calculation is also reflected in the accuracy of calculation. We should develop a good habit of checking and keep the writing clean. In this way, we can develop a rigorous style in the long run, which is also good for the future.

9. There are differences in essence. If the data is used to simulate a "human" system, it can only be simulated logically at present. Human beings contain complex emotions and various factors that change the mode of thinking. It is not simple that computers can simulate, even supercomputing can't
then, will a human (computer) with thinking (complex instructions), the ultimate creature after hundreds of millions of years of natural evolution, have a system crash? The answer is yes! Psychosis can understand that there's something wrong with the system's calculations, and memory loss is disk damage. Human self-healing ability can only repair the body (hardware), not the consciousness (system). So I think the world has already had an answer to what would happen if human beings broke down.

10. Distributed operating system, network cluster, to achieve this application, you need hardware, operating system, application support.