The calculator of time
Publish: 2021-03-28 04:54:05
1. 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.
2. 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.
3. There are three recommendations: 1. bitcoin is the birthplace of blockchain technology, and the market has confidence in it. It still maintains a stable growth under the adverse situation of major policies. Once it solves the problem of capacity expansion, the price rise can be predicted. 2. Compared with bitcoin, the advantage of Ethereum is that it has no policy problems. Although the event led to its bifurcation, the establishment of enterprise Ethereum alliance may solve this problem. Its concept and Prospect of smart contract attract many developers to follow. 3. GTCC (global tourism chain) GTCC is applied in tourism shopping, travel, hotel accommodation, overseas real estate, crowdfunding, game community, artificial intelligence and other transaction scenarios, which solves the problems of high cost, transaction cycle and transaction risk of shopping, travel, hotel accommodation, overseas real estate, crowdfunding and game community. At the same time, the features of Ethereum's decentralization and the automatic execution of smart contracts can achieve a more fair, just and open consumption experience, so that more tourism consumers have no worries. GTCC blockchain + consumer application ecology = national promotion and sharing! When consumers consume in other ways such as cash in GTCC community, they can get GTCC as a reward. As an open platform, with the consent of the tourism chain community, any proct and service provider of the tourism instry can access the online chain and become a member of the community. Members can get GTCC through promotion and enjoy the dividends brought by platform value-added.
4.
Aochuang (Guangdong) blockchain Technology Co., Ltd. is a limited liability company (wholly owned by a legal person invested or controlled by a natural person) registered in Shunde District, Foshan City, Guangdong Province on May 8, 2018. Its registered address is at shop 611, 6th floor, block a, Yuejin Center (original cultural Plaza), No. 1, Yuejin South Road, Beijiao community neighborhood committee, Beijiao Town, Shunde District, Foshan City
the unified social credit code / registration number of aochuang (Guangdong) blockchain Technology Co., Ltd. is 91440606ma51muek15, and the legal person is Zhang Jianlong. At present, the enterprise is in the status of cancellation
the business scope of aochuang (Guangdong) blockchain Technology Co., Ltd. is: blockchain software development; Internet information service; Network trading platform construction; Online game R & D, sales and service; Information system integration service; Information technology consulting service; Enterprise management consulting; Data processing and storage services; Cloud service platform operation; Database management of digital works; Digital proct management; Digital proct distribution, sales and services. Digital credit platform construction, promotion and application
view more information of aochuang (Guangdong) blockchain Technology Co., Ltd. through aiqicha
5. If you use Microsoft office, then open excel, you can calculate directly
for example,
A1 = 1:35
A2 = 0:10
A3 = sum (A1: A2)
then A3 will be automatically displayed as 1:45
for example,
A1 = 1:35
A2 = 0:10
A3 = sum (A1: A2)
then A3 will be automatically displayed as 1:45
6. =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
7. There is no mistake! The calculation error of network transmission is misleading you! In fact, the answer is that!
8. computing power is trained. When we were in primary school, we didn't have a calculator. The topics were all written and oral arithmetic. In junior high school, when I had a calculator, I always used it. After a period of time, I found that my computing ability had declined. I put it aside
no matter how large the number is or how complex the operation is, you should insist on doing it yourself; I also like mental arithmetic. I don't need a pen to do it. For example, 18 * 37 can be 20 * 37 or 18 * 40
no matter how large the number is or how complex the operation is, you should insist on doing it yourself; I also like mental arithmetic. I don't need a pen to do it. For example, 18 * 37 can be 20 * 37 or 18 * 40
9. Now that you are a senior three, I believe you have not used a calculator for a long time, so I think your computing ability is very good. You are wrong because of your carelessness, not because of your computing power. I was also admitted to Beijing from Jiangsu Province. Russia has some opinions on this. First of all, you have to train yourself to do right every time you do a question. Check it every time you finish a question. Don't check all the papers again. In this way, your memory of this question is still fresh, and you can easily find some low-level calculation errors. Also, when calculating problems, try to concentrate your mind and don't think about it. While calculating, you can whisper what you mean. In this way, you can force your attention to focus on the calculation and make fewer mistakes. Finally, more practice is still very important, no matter how good the theory is, I wish you good luck
10. At the beginning, the most simple calculators are displayed
don't be fooled by the first impression of Windows 7 calculators. In fact, Windows 7 calculators are very powerful. It's not as if you can only calculate addition, subtraction, multiplication and division
steps / methods
click the View menu in the upper left corner of the calculator to see multiple options of the calculator, so that your calculator needs to be changed into the most suitable calculator. As the saying goes, the most powerful and comprehensive functions are not all what you want. The most suitable function is what you need most< How much does an ounce of gold weigh<
calculate how long windows 7 SP1 has been released
calculate fuel consumption
open windows 7 calculator more dazzling method
the easiest way to open windows 7 Calculator is to find the attachment at the beginning of Windows 7 and then find the calculator. But this method is more troublesome
for those of you who have time like money, you must find a faster way to open the calculator. This method is actually very simple, but remember to name "Calc", input homophonic "wipe wipe"
first, "run" shortcut - "Win + R", then "Calc", finally, enter
Enter "Calc" directly in "run"
I hope Windows 7 calculator can help you share more computing tasks.
don't be fooled by the first impression of Windows 7 calculators. In fact, Windows 7 calculators are very powerful. It's not as if you can only calculate addition, subtraction, multiplication and division
steps / methods
click the View menu in the upper left corner of the calculator to see multiple options of the calculator, so that your calculator needs to be changed into the most suitable calculator. As the saying goes, the most powerful and comprehensive functions are not all what you want. The most suitable function is what you need most< How much does an ounce of gold weigh<
calculate how long windows 7 SP1 has been released
calculate fuel consumption
open windows 7 calculator more dazzling method
the easiest way to open windows 7 Calculator is to find the attachment at the beginning of Windows 7 and then find the calculator. But this method is more troublesome
for those of you who have time like money, you must find a faster way to open the calculator. This method is actually very simple, but remember to name "Calc", input homophonic "wipe wipe"
first, "run" shortcut - "Win + R", then "Calc", finally, enter
Enter "Calc" directly in "run"
I hope Windows 7 calculator can help you share more computing tasks.
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