Calculator power
Publish: 2021-04-16 19:56:55
1. Lightcoin calculator calculated for reference only, not necessarily real income, recommend several mining graphics card to you, hd7990 R9 290x gold slave miner data card R9 280x
2. The Japanese supercomputer "K" made by Fujitsu ranks first, becoming the fastest supercomputer in the world
the running speed of supercomputer K is 816 million floating-point calculations per second (petaflops), which is composed of 68544 sparc64 viiifx processors. Each processor has 8 built-in cores, and the total number of cores is 548352. According to Fujitsu, the supercomputer is still under construction and will be put into operation in November 2012, when the number of processors will increase to 80000<
previously, China's Tianhe-1A ranked first, and ranked second in the latest list, with an operation speed of 257 million floating-point calculations per second. At the same time, China is also improving the computing speed of Tianhe-1. In third place is the United States "Jaguar" (Jaguar), the speed of 1759 million floating-point calculations per second.
the running speed of supercomputer K is 816 million floating-point calculations per second (petaflops), which is composed of 68544 sparc64 viiifx processors. Each processor has 8 built-in cores, and the total number of cores is 548352. According to Fujitsu, the supercomputer is still under construction and will be put into operation in November 2012, when the number of processors will increase to 80000<
previously, China's Tianhe-1A ranked first, and ranked second in the latest list, with an operation speed of 257 million floating-point calculations per second. At the same time, China is also improving the computing speed of Tianhe-1. In third place is the United States "Jaguar" (Jaguar), the speed of 1759 million floating-point calculations per second.
3. 1. Students generally feel that the accuracy of calculation will decline after they are separated from the scientific calculator
the inaccuracy of operation is largely e to the lack of deep understanding of basic concepts, the lack of thorough grasp of basic formulas and rules, and the lack of proficiency in their application. Therefore, in teaching, teachers should consciously and systematically equip some exercises without using calculators. When students are proficient in the application of concepts, formulas and rules, and their accuracy is guaranteed, they may as well use calculators again. The calculator as a learning aid, so as to liberate students from the operation, into the study of other problems
2. The effect of using calculator on flexibility
calculation should be reasonable, simple, skilled and fast, which requires students to be flexible in calculation and quick in thinking. The improvement of this ability requires students to observe and think about problems from many aspects, angles and directions. The scientific calculator can quickly solve the complicated calculation, if students blindly use the calculator, they will simply and mechanically input the data to solve, without thinking about how to solve the problem quickly and concisely. The lack of training in this area means that we have lost the effective way to improve our computing ability. I think we can have a class (or several classes) of using calculators to solve problems after a certain part of the content is finished. Before that, calculators are not allowed to be used. For example, in the seventh grade, some students use calculators to solve problems after adding rational numbers, and some use calculators after subtraction. It's better to finish the basic course, and then have calculators after students practice. Or, when encountering this kind of problem, such as calculating 18.75-15.39 + 1.25-14.61, students are required to solve it in a simple way, so as to consciously help students to calculate flexibly, reasonably and simply
3. The impact of using calculator on strictness
when using calculator, the calculation process is generally omitted. However, whether it is the usual requirements or the examination, the problem-solving process is required to be complete and standardized. In fact, this is the embodiment of the thinking process. Due to the lack of training in the use of calculators, the students' problem-solving is not standardized and complete, which is a serious defect and is very unfavorable to the improvement of students' mathematical thinking and mathematical quality
4. The influence of using calculator on mathematical thinking and psychological quality
operation plays a significant role in cultivating students' scientific way of thinking and forming good thinking habits and psychological quality. If students use scientific calculators excessively, they will be unwilling to spend time thinking and doing standard calculations, so as to engage in them rashly. As time goes by, thinking is not orderly and chaotic, and calculation is graally unfamiliar. In addition, we have formed the bad habit of carelessness and carelessness, and lack the training of will and perseverance. At the same time, some students are only used to one-way, single-level operation, used to forward calculation, not used to multi-directional, multi-level operation, not used to reverse operation. Without the scientific calculator, students have to pay attention to the direction and skills of calculation, so as to form the habit of looking ahead and looking after the whole situation. Through long-term training, students' mathematical thinking ability and confidence and perseverance are improved
the tradition of Chinese ecation attaches importance to the training of basic skills. Chinese students often have a solid foundation, and some American College Students' computing ability is not as good as Chinese middle school students. However, the advantage of basic skills of computing ability is less and less obvious for high school students nowadays. A senior high school mathematics teacher said: "many colleagues have such a feeling. Now, as soon as they go to senior one, they have to make up for the calculation for the students. Teachers and students feel that it's hard." A high school student's parents said: "because calculators can be used in the high school entrance examination, but they are not allowed in the college entrance examination, so my son should give up calculators first after he goes to high school. Because of his long-term dependence on calculators, his son doubted his ability of oral and written calculation, and was not at ease with the results of calculation. It's a waste of time. After more than a year, I finally gave up the calculator. " This kind of phenomenon is also the place that I feel puzzled. Why can I use calculator in senior high school entrance examination, but not in college entrance examination? How can students adapt to this change as soon as possible< In a word, with the rapid development of science and technology in the information society, the use of computers and scientific calculators is becoming more and more popular. How can we turn a blind eye to middle school mathematics? Can the field of mathematics ecation sit still? The use of calculators is no longer an economic problem, but an inevitable result of social progress and scientific and technological development. But the use of calculators also weakens the students' computing ability and affects the improvement of students' mathematical quality. We must guide students to use calculators reasonably. On the one hand, we should ensure the improvement of calculation ability, on the other hand, we should be able to operate calculators skillfully.
the inaccuracy of operation is largely e to the lack of deep understanding of basic concepts, the lack of thorough grasp of basic formulas and rules, and the lack of proficiency in their application. Therefore, in teaching, teachers should consciously and systematically equip some exercises without using calculators. When students are proficient in the application of concepts, formulas and rules, and their accuracy is guaranteed, they may as well use calculators again. The calculator as a learning aid, so as to liberate students from the operation, into the study of other problems
2. The effect of using calculator on flexibility
calculation should be reasonable, simple, skilled and fast, which requires students to be flexible in calculation and quick in thinking. The improvement of this ability requires students to observe and think about problems from many aspects, angles and directions. The scientific calculator can quickly solve the complicated calculation, if students blindly use the calculator, they will simply and mechanically input the data to solve, without thinking about how to solve the problem quickly and concisely. The lack of training in this area means that we have lost the effective way to improve our computing ability. I think we can have a class (or several classes) of using calculators to solve problems after a certain part of the content is finished. Before that, calculators are not allowed to be used. For example, in the seventh grade, some students use calculators to solve problems after adding rational numbers, and some use calculators after subtraction. It's better to finish the basic course, and then have calculators after students practice. Or, when encountering this kind of problem, such as calculating 18.75-15.39 + 1.25-14.61, students are required to solve it in a simple way, so as to consciously help students to calculate flexibly, reasonably and simply
3. The impact of using calculator on strictness
when using calculator, the calculation process is generally omitted. However, whether it is the usual requirements or the examination, the problem-solving process is required to be complete and standardized. In fact, this is the embodiment of the thinking process. Due to the lack of training in the use of calculators, the students' problem-solving is not standardized and complete, which is a serious defect and is very unfavorable to the improvement of students' mathematical thinking and mathematical quality
4. The influence of using calculator on mathematical thinking and psychological quality
operation plays a significant role in cultivating students' scientific way of thinking and forming good thinking habits and psychological quality. If students use scientific calculators excessively, they will be unwilling to spend time thinking and doing standard calculations, so as to engage in them rashly. As time goes by, thinking is not orderly and chaotic, and calculation is graally unfamiliar. In addition, we have formed the bad habit of carelessness and carelessness, and lack the training of will and perseverance. At the same time, some students are only used to one-way, single-level operation, used to forward calculation, not used to multi-directional, multi-level operation, not used to reverse operation. Without the scientific calculator, students have to pay attention to the direction and skills of calculation, so as to form the habit of looking ahead and looking after the whole situation. Through long-term training, students' mathematical thinking ability and confidence and perseverance are improved
the tradition of Chinese ecation attaches importance to the training of basic skills. Chinese students often have a solid foundation, and some American College Students' computing ability is not as good as Chinese middle school students. However, the advantage of basic skills of computing ability is less and less obvious for high school students nowadays. A senior high school mathematics teacher said: "many colleagues have such a feeling. Now, as soon as they go to senior one, they have to make up for the calculation for the students. Teachers and students feel that it's hard." A high school student's parents said: "because calculators can be used in the high school entrance examination, but they are not allowed in the college entrance examination, so my son should give up calculators first after he goes to high school. Because of his long-term dependence on calculators, his son doubted his ability of oral and written calculation, and was not at ease with the results of calculation. It's a waste of time. After more than a year, I finally gave up the calculator. " This kind of phenomenon is also the place that I feel puzzled. Why can I use calculator in senior high school entrance examination, but not in college entrance examination? How can students adapt to this change as soon as possible< In a word, with the rapid development of science and technology in the information society, the use of computers and scientific calculators is becoming more and more popular. How can we turn a blind eye to middle school mathematics? Can the field of mathematics ecation sit still? The use of calculators is no longer an economic problem, but an inevitable result of social progress and scientific and technological development. But the use of calculators also weakens the students' computing ability and affects the improvement of students' mathematical quality. We must guide students to use calculators reasonably. On the one hand, we should ensure the improvement of calculation ability, on the other hand, we should be able to operate calculators skillfully.
4. =Now () + 57 / 24
is 57 hours after the present time
February 24, 2012 6:07 this is the time of my computer. The calculation result is 15:07 on February 26, 2012
or you can type the time you want to calculate and add 57 / 24. Note that the two cells are set to the time format 2012-02-24 4:18
excel time is calculated by 24 hours, so it is divided by 24
is 57 hours after the present time
February 24, 2012 6:07 this is the time of my computer. The calculation result is 15:07 on February 26, 2012
or you can type the time you want to calculate and add 57 / 24. Note that the two cells are set to the time format 2012-02-24 4:18
excel time is calculated by 24 hours, so it is divided by 24
5. Based on the decentralized characteristics of blockchain technology, the application of blockchain technology can be said to be more, but at present, the substantive application is still less, mainly applied in the fields of finance, medical treatment, authentication, smart contract, sharing economy, digital assets and so on. For example, Yingtang Zhongchuang's blockchain solution is mainly in the development of data encryption, transaction protection and data security transaction system, while other enterprises are more focused on internal needs.
6. 1、 Fully understand the importance of calculation
with the development of science and technology, calculators, computers and other advanced computing tools have become increasingly popular in people's lives, seriously affecting people's understanding of oral and written calculation. More and more people think that traditional calculation is no longer needed, as long as they can use calculators and computers, Many students have a lack of understanding of the importance of calculation and rely too much on calculators, and calculators are not allowed to be used in the college entrance examination, so many students lose a lot of points in the college entrance examination on calculation.
Second, to implement the foundation
to improve the calculation ability, it is by no means overnight. As the saying goes, "Rome is not built in a day.", We must start from childhood, just like building a high-rise building. When we learn to calculate, we must be down-to-earth and lay a good foundation step by step. Otherwise, once we lose files, especially too much, it will be difficult to make up
with the development of science and technology, calculators, computers and other advanced computing tools have become increasingly popular in people's lives, seriously affecting people's understanding of oral and written calculation. More and more people think that traditional calculation is no longer needed, as long as they can use calculators and computers, Many students have a lack of understanding of the importance of calculation and rely too much on calculators, and calculators are not allowed to be used in the college entrance examination, so many students lose a lot of points in the college entrance examination on calculation.
Second, to implement the foundation
to improve the calculation ability, it is by no means overnight. As the saying goes, "Rome is not built in a day.", We must start from childhood, just like building a high-rise building. When we learn to calculate, we must be down-to-earth and lay a good foundation step by step. Otherwise, once we lose files, especially too much, it will be difficult to make up
7. At present, calculators are not allowed to be used in college entrance examination in all parts of the country except Shanghai. In the high school entrance examination, the use of different places, there are also reciprocating situation. Those who disapprove of using calculators should pay attention to the cultivation of students' mental calculation ability and regard mental calculation as an important calculation ability. This is relative to simple operations< In addition, besides the ability of spatial thinking, logical ability and problem-solving ability, the ability of calculation is also the focus of the test.
8. Unknown_Error
9. The group hopes to demonstrate the impact of calculators on computing power through research and investigation, and propose ways to change this situation. The purpose and significance of the project: (1) to demonstrate that "the use of calculators affects the calculation ability of middle school students" (2) to cultivate the organizational ability, practical ability and social practice ability of group members; (3) to cultivate the sense of cooperation, sense of responsibility and other application related courses of group members: mathematics, Chinese activity plan: (1) task division: Feng Mingyu, Zhou Yu, Han xiahong designed the questionnaire, which was approved by all members of the group. Zhan Liying, Weng Yuhong and Wu Zhiying distributed and collected the questionnaire, and made technical statistics. Chen Jingjing and Fu Tingting completed the survey report, which was approved by all members of the group. (2) activity steps: 1. 2. 3. Complete the report according to the technical statistics, and submit the report after passing the audit 3) Experts planned to visit: 50 middle school teachers (4) conditions required for the activity: campus environment expected results: make every team member aware of the importance of teamwork, and improve their ability to solve problems in the process of organizing questionnaire survey and test survey, and improve their analytical ability in the process of summarizing survey results. The investigation demonstrates that "the use of calculators affects the calculation ability of middle school students". The research process record of research-based learning project in Wenchang middle school topic title: Chen Min, leader of class 2 and 6, senior middle school, Zhan Liying, group members and division of tasks: Feng Mingyu, Zhou Yu, Han xiahong designed the questionnaire, which was approved by the whole group members, Wu Zhiying distributed and collected the questionnaire, and made technical statistics. Chen Jingjing and Fu Tingting completed the survey report, which was reviewed and approved by the members of the whole group. The process records (the records of each activity should be truthful, detailed and organized) activity steps: 1. After designing the questionnaire, they were distributed to the members under investigation. 2. 3. Complete the report according to the technical statistics, and submit the report after passing the audit. The members of the activity experience group not only successfully completed the survey task, but also demonstrated that "the use of calculator affects the calculation ability of middle school students" through questionnaire survey and test survey. Members of the group think that at present, middle school students should be made clear about the harm of using calculators and the requirements of examinations, so as to consciously limit the use of calculators. This research-based learning makes every team member aware of the importance of teamwork, and improves the ability to solve problems in the process of organizing questionnaire survey and test survey, and improves the ability to analyze in the process of summarizing survey results. Wenchang middle school project research evaluation form project name project completed by Chen Jingjing and Fu Tingting on December 15, 2010 project tutor Chen Min project report (additional pages can be attached) survey topic: survey content: survey object: 100 middle school students and 50 middle school teachers survey method: questionnaire survey The results of the survey are as follows: (1) the basic situation of middle school students using calculators at this stage: the survey shows that 76% of middle school students often use calculators in their daily study, 21% of middle school students occasionally use calculators in their daily study, and 3% of middle school students refuse to use calculators in their daily study. 96% of the teachers advocated that students should use calculators as little as possible in their daily study, and 4% of the teachers were neutral. According to the survey, the use of calculators is very popular in middle school life. Students say calculators can help shorten the time to complete homework and rece the pressure of study to a certain extent. However, the engineer of the human soul, the teacher, hardly supports students to use calculators in their normal study. Teachers think that calculator is indeed a learning tool, used to guide students' learning, but too much use of calculator is easy to cause students to rely on calculator, thus recing students' computing ability. According to statistics, in the general test of science subjects at this stage, almost 100% of them are restricted to use computers, and the college entrance examination explicitly stipulates that computers are not allowed to use. This is quite different from the students' use of computers when they finish the exercise, which reflects that the students' use of computers at this stage does not meet the requirements of the examination 2) The basic situation of middle school students' calculation ability at this stage: through 50 oral arithmetic problems, it is found that the calculation ability of middle school students shows a decreasing trend with the increase of grade, but with the increase of grade, the frequency of calculator use does not show an increasing trend. Specifically, in order to prepare for the college entrance examination, senior students are limited to the use of calculators, and the teachers basically agree that the use of calculators is the main reason for the decline of middle school students' computing ability with age. In the survey, it is found that the frequency of using computers by students with strong oral arithmetic ability is far lower than that of students with poor oral arithmetic ability. 90% of the students who often use computers admit that they often lose points in simple calculation in the exam of restricting the use of calculators. It is found that calculators have a negative impact on the calculation ability of middle school students, and long-term dependence on calculators will have a strong maladjustment to today's college entrance examination policy, thus affecting the performance.
Hot content