What computer knowledge should I learn now in the first year of junior high school Add 50 points to

What do you do most of the time when you touch the computer?

It's nothing more than playing games, listening to songs, watching movies.

But you're only exposed to his entertainment features, but he has other features that you haven't touched.

First of all, you need to understand the hardware of the computer, so that you can solve it yourself when you encounter a computer failure in the future, and then you need to contact various software, especially office software, drawing software, because you will learn in your studies in the future, which is more conducive to your understanding.

Generally speaking. You should be able to practice typing at your current age.

I'm a junior high school student myself.

My typing speed is relatively fast.

I think you should be at least 40 words a minute

If you already have this speed.

I think you can go to some anti-virus online and take a look.

You can learn some techniques for troubleshooting computers.

If you don't want that.

You can also learn to make web pages and flash (there should be a tutorial for web pages in junior 2) and we also have web page creation contests here, just junior 2.

What do you like about computers.

For example, playing games.

Chat. If you like that aspect, start with **

I think you should learn to code :

Pascal or C++

Pascal is mainly to deal with the future of NOIP and IOI, and the future is better than all other things like web pages, flash, etc. You can be admitted to key universities and high schools.

C++ is mainly for your future employment, learning C++ is suitable for work, you can enter a large company like Microsoft in the future, and you can also participate in competitions such as NOIP, NOP, IOI, etc.

I suggest that you learn Pascal first and then C++ in the second year of junior high school. I am also in the first year of junior high school, and now I have taken the NOIP ranking, and I can enter a key high school without examination.

If you get a ranking in Noipioi, you can get into Harvard!!

Take your time, programming is definitely promising!!

In school, the teacher told us to practice typing first, and then master the usual document operations (like how to write documents, etc.); Familiar with the basic operation of the computer; Know what the virus means and how to prevent it. In short, in the first year of junior high school, you need to master computer knowledge from shallow to deep, and lay a good foundation skills.

Hello landlord! Glad to answer your questions!

Solution 1): Let the first method have an annual interest rate of x%, and the second method is y%.

2000x+1000y）80%=

1000x+2000y）80%=

Then 2000x+1000y=1

1000x+2000y= 2.

Then 2 ×2 2000x+4000y= 3.

Then 3-1.3000y= y=then x=

A: At that time, the first type of annual interest rate was, and the second type was.

2) There are a total of 120 teachers in the school, and 11 desks have been prepared, and x teachers have prepared Y desks.

then x 12 = y-1

10y+10=x

Therefore x=120, y=11

3) Let the mass containing tin be x and lead y

x+y=115 (1)

13 15*x+32 35*y=103 (2) by equation (1).

y=115-x into equation (2).

13 15*x+32 35*(115-x)=103, multiplied by 105 on both sides

13*7*x+32*3*(115-x)=1081591x+11040-96x=10815

5x=225

x=45kg

y=70kg

4) Let the train speed be x and the distance between ab be y

2x=345-y

x=130y=85

520 130 = 4 hours.

Solution: Let the annual interest rate of the first method be x%, and the second method is y%.

2000x+1000y）80%=

1000x+2000y）80%=

Then 2000x+1000y=1

1000x+2000y= （2.

Then 2 ×2 2000x+4000y= （3.

Then 3-(1. 3000y=

y=then x=

A: At that time, the first type of annual interest rate was, and the second type was.

Solution: Set up x tables.

12（x-1）=10x+10

12x-12=10x+10

2x=22x=11

12x(11-1)=120 (name).

A: The school has 120 teachers and 11 desks.

Let the mass containing tin be x and lead y

x+y=115 (1)

13 15*x+32 35*y=103 (2) is brought into (2) by equation (1) y=115-x.

13 15*x+32 35*(115-x)=103, multiplied by 105 on both sides

13*7*x+32*3*(115-x)=1081591x+11040-96x=10815

5x=225

x=45kg

y=70kg

Average speed for the distance between B and C:

345-150) divided by (2 hours - 30 minutes).

Finally, divide 520 by the average speed (the answer to the equation) = 4 hours.

Solution: Let the savings interest rate of 2000 yuan be a, the interest tax will be 20% and the savings interest rate of 1000 yuan will be obtained from the dry interest rate and 3 will be (3% -a) [2000a + 1000 (3% -a)] x (1 - 20%) =

1000a + 30 = / 80%

1000a =

a = then 3% -a = 3% -=

Answer: The savings interest rate of 2,000 yuan is, and the savings interest rate of 1,000 yuan is the solution: x tables are prepared.

12（x-1）=10x+10

12x-12=10x+10

2x=22x=11

12x(11-1)=120 (name).

A: The school has 120 teachers and 11 desks.

It takes 4h. According to the inscription, the train travels 195km and the speed is 195, so the time from B to C is 520 130 = 4h

(1) Solution: Let the first type be x at that time, and the second type be y. According to the title:

20%（2000y+1000x）= ② 400y+200x= ④

Solution: curly braces: x= y=

2) Solution: There are teachers x people, and there are Y desks. Then: curly braces: 12y-x=12 x-10y=10

Solution: x=120 y=10

Now is the era of information technology, IT technology talent is very lacking, if students are interested in IT technology, it is recommended that you learn IT technology, it is understood that now IT industry network engineer, software engineer and other positions are very popular, a person without any work experience at least 6000-7000 starting salary. This salary package is much higher than that of other traditional industries. So, don't worry about going to a technical school with no future, as long as you can choose a good major and learn skills, getting a high salary is not a problem at all.

There are many majors in this area of computer, including network technology, network security, development (programming), databases, etc., I used to read a lot of books in the library in college for a year, but I still don't know much about this aspect, I am very confused, and finally go to a vocational college to learn network technology, so that I slowly understand, know the direction. If it is very difficult to learn by yourself, there are many online tutorials, but there is no direction, there is a teacher to guide you in school, and you know a lot from the teacher, after all, the teacher has a lot of knowledge. If you really want to learn computer science, it is recommended that you first understand those majors, find the one you feel most interested in, study seriously, and study hard!

Computers began to spread to millions of households, just like televisions back then. On the one hand, everyone's living standards have improved and they can afford it. Computers are getting cheaper and cheaper.

On the other hand, the information society, the rapid development of the Internet. Nowadays, it is common to get a computer and access the Internet. A network cable connects the worlds.

Most people usually use computers for life and work, and the operations used are not very complicated. You can master it by learning it yourself. Some people who are interested in computers will learn some high-end computer technologies, such as learning programming, developing systems, and developing software.

Today we are going to talk about some commonly used simple ones. With some foundation, you can learn complex computer knowledge slowly.

First of all, I think if you want to learn general maintenance and repair is not suitable for you, because I think you want to learn that kind of relatively high computer technology, computer high technology, I think it is nothing more than in the network and programming, network such as hackers these are powerful, if you "go the right way", then you have to learn wiring, build various servers, LAN problems, vpn and so on knowledge you have to learn, if you talk about programming, it is more painful, I am learning computers, programming is very difficult for me, heh, I've learned C, C++ and ASP programming, after learning programming, you can get all kinds of programs out, heh, viruses are also made up by computer programming masters, there is a programming master in my class, every time something is held, he makes a program to play, what random ** and so on.

C language, one of the most basic techniques of learning numbers, and the rest will be easy to develop.

Learn about the industries that will be easy to find a job in the future. Sunrise industry! It mainly depends on what you have learned, and whether you have a foundation. If you study computer science, you can graduate in two years and have a wide range of jobs.

The best school design and software development.

It would be nice to know the rest.

If you want to be a hacker, you have to learn everything.

Web Design, Production**.

Animation design.

In fact, I think it's good to be a boss who sells computers, and you have access to the latest models of accessories, and you have to keep up with the trend.

Tutorials and basics for building a PC.

This information indicates that your CPU is an AMD CPU, and the 3200+ is the CPU model, but the CPU frequency.

System-integrated graphics.

The main frequency is the main operating frequency of the CPU, but it should be noted that generally speaking, the higher the main frequency will be faster, but it does not necessarily mean that the higher the main frequency must be lower than the lower speed block. The speed also depends on the multiplier, and the L2 cache or something!

To put it simply, yours is AMD's CPU, running at 1810MHz Athlon

Sempron is the lowest-end microprocessor of AMD in the United States, replacing the Duron processor and competing with Intel's Celeron D processor.

Semron is the meaning of Semblem Dragon, which is a series of AMD, and the same is true of Athlon.

It seems that there is also a Xuanlong, Haolong.

3200+ represents its processing speed.

Sempron is the lowest-end microprocessor of AMD in the United States, replacing the Duron processor and competing with Intel's Celeron D processor.

ATHLON is the meaning of Athlon, it is an AMD series processor that can be both super-frequency and super-frequency, AMD Semolon(TM) Processor 3200+, 3200+ is just a codename, representing the highest frequency, TM stands for a trademark that is not registered in the State Administration for Industry and Commerce, and the registered trademark is ,

I'm dizzy, you want to think that his friend's watch has gone for 3 hours, so doesn't that exceed this rule means that if his friend's watch is closer to 20 9 hours, his watch is closer to 2 hours.

It turns out that to make this meaning, in fact, you can imagine that his friend went to 20 9 hours when his watch went to 2 hours, but the second hand could not move at the same time.

Besides, if you count the hours, if you change it to a second hour, it's 800 seconds, so there's no problem at all.

His watch is 1 10 times slower, just by comparing it to normal time, which is his 1 second = normal 10 9 seconds.

So he's going to walk for 20 hours, that's 7,200 seconds, and the normal one is 7,200*10 9

Your algorithm is correct, his watch can go up to 2, but his friend has to wait for his time as you said, it can't be accurate to a certain hour or even to a certain zero.00. A few hours.

Embarrassment. Similar to Zeno's paradox, this can be said to be a philosophical question.

This topic seems really simple, and it will take him x hours.

2 + x = 2 ÷ 9 \ 10 )

It's easy to figure out x =