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Computer |
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What is the computer?
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The principle of the computer
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Around shapes of the Computer
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Parts of Computer
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Common mistakes of computer buyers
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Ten best advise to buy PC
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Dirty condition
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Catch virus and protect from it
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Few words about Software
What is the computer?
I hope You know it allready. . . BUT . . .
What is computer that stick in our mind by its appearance? Do it must has monitor, keyboard, mouse and processor? What will happen without one of above?
First of all, try to define computer what is it.
- Computer is electronic calculation machine with output and input
- Computer is a set consists of monitor, keyboard, mouse and processor
- Computer is an electronic machine that can be supplied with program (plan of operation) and can store and recall information
The principle of the computer
All computers have above mentioned structure. Let's explain this structure by simple words because this article for ordinary customers.
Mouse and keyboards are known as input at the ordinary customers level. How do you give command to your computer and how your computer receive your command without above mentioned things (mouse and keyboard). Computer does not recognize and receive your command without above things, although you turned on it. Because inputs are requested.
During the processing, too many jobs are made in processor for processing your input. For example: input come into being when mouse slightly move and also processing is carried on that process the movement of mouse. In reality, what is happen when mouse slightly move? Only cursor of the mouse moves by the "slightly move" size. BUT . . . at that time, processor that received command for 'slightly move' cursor, draws cursor anew by number of point, it passed. These numerous process is not catching our eyes. It seems that we move mouse by our hand, in reality, it is drawn anew. It is named 'processing'. Too many jobs that processing your commands such as depiction and show result, etc, are fulfilled by help of software and hardware.
As for output, monitor, printer, etc, are output device. You can not see result of your command without monitor. Computer without monitor is only 'deaf' box. Generally, we all see our commands result on monitor, hear through speaker and take it by using printer.
Above-mentioned example is very simple one. Concisely, computer is worked by following principals that inputs that used to give command and output that used to show result of your command on monitor. Before it your commands were processed in processor.
Now, you understand input and output that basement of computer science, although a little. It is possible to give command without keyboard through using mouse but impossible without both. Other input must has in any computer, if both absent. Maybe, in the future when computer will understand your voice, both mouse and keyboard will be forgotten. Because system that recognize voice, will fully carry out duty of input system.
Around shapes of the Computer
Computer development is being continued today. Did you hear that a computer like two-story building was used some 20 years ago. Pocket computers already have been made. It is apparent that computer development will be sped up more and more. It is nonsense to talk about good design and attractive shape for computer that like huge building. At that time design is not importance issue. But now it is necessary to talk about design in detail. Last years, rectangle monitor, standing processor and hand mouse stable maintain their shapes. It is right. Although they are not classical one, enough for meeting customer's demand. But you notice that they possess some defects such as big monitor and processor that difficult to carry. Maybe, near future, monitor will be out of commission and instead of it, a flat surface will be used that show you result of command you sent processor.
Although mouse, keyboard and processor of the computer are being changed but its general box shape has been kept.
Parts of Computer
Computer, of course, consists of above mentioned monitor, mouse and keyboard. But as for whole computer system, they are considered parts of system. There is no need to explain them in detail. They are vary from each other by price and quality. But what is hidden in processor?
All above parts, such as monitor, mouse, keyboard are connected with processor by kinds of plugs. Process has main parts, such as hard disk, floppy disk driver and RAM in it. They are necessary parts to operate computer system.
Hard disk that keeps computers software and data. It is with capacity from 1GB-40GB. It is understandable that huge capacity keeps huge data.
Floppy disk driver it seems to not necessary but already has penetrated into consumption as standard. Main role of it that keeps and carries only little informations and datas. It is with capacity 1,44MB.
RAM (Random Access Memory) It has main role to provide computer's normal function. It is used when computer works actively. Keep and move all datas and informations that formed temporarily. All information is cancelled at the moment you shut down computer without doing save. You said " I did not save my file before sign out and my file was cancelled". Now you understand all files locate in RAM. It's capacity is expressed as 16MB, 32MB, 64MB and 128MB.
Processor you know it is crucial importance part of the computer. It processes all operations of computer and show results of them. Processor establishes price of the computer. In other words, if processor price go up, computer set's price will be increased.
Besides, there are other additional parts sound card, monitor card and CD Driver, etc.
Common mistakes of computer buyers
Judging from many years research, buyers who buy computer set or its parts, make some mistaken. But it is not mean that they are "fool". They always make mistakes due to lack of knowledge and experience. Now, let's interested in common mistaken of computer buyers.
- Be hurry to buy computer:
- It is suitable that you spend enough time for making decision to buy computer. But many people are hurry to buy computer and left for shops. 'Hurry' is not good friend to help you buy computer. It is easy to make decision within only an hour to buy new computer. Unfortunately, it spends few days receive and operate it. You understand that you will lose your value-time, if you bought sub-standard one.
- Buy from reputable shops and stores::
- Many customers wants to buy PC (personal computer) from shops which they always customized not specialized. Most of them deceived by long period of guarantee. Long term guarantee is not good condition to buy PC.
- Wrong choice:
- More than half of the PC buyers do not know which computer provide and meet their satisfaction and demand. It is explained that trend of public or one or two men's challenge. First think deeply what is your demand, what is just need PC for and then make your choice which one better for you.
- Magic numbers and "dirty" advertisements:
- Most PC sellers advertise their products by magic number or very cheapest price which they called cut-rate sale. It makes buyers to buy their product.
- Make shopping:
- You pay attention enough when you buy PC because you spent not small money. Too older and small capacity computer makes you problem. So you buy computer that common used at that time. Many sellers persuade buyers to buy some additional device, not useful, by double price. In fact, those devices bring burden in your economy.
- In case buy a PC with disable system:
- Sometimes, it is happened for some buyers that buy computer without main programs, which really need he or she. Because could not determined what is really need for his or her.
- Choice swindle seller:
- Carefully choice sellers. Many people deceived appearance of the seller how to sell his computer and how 'well' explain his or her product. After hearing explain of seller, some buyers believe that PC he or she bought never broken.
- Buy PC like vacuum cleaner:
- In every case, computer is different system that includes many devices and parts. You have to pay attention each part. Many firms and companies that made PC, try to sell its production like ordinary electric appliances. But it is not.
- Shy from unknowledgeable about PC:
- It is easy to buy good computer more than brain operation. Many people regards that they do not know about computer and ask about it from seller. It is enough you read a paper information PC before you do shopping.
Ten best advise to buy PC
- Do not buy by first price seller suggest:
- First best way to buy good computer is above mentioned.
- Know well which computer really need you:
- Some people come to vehicle seller and suggest to sell me any vehicle. Like that buyers suggest to computer seller that 'I need a computer'. Your question give possibility for seller that avoid from responsibility. Before buying computer always think what will you do with computer and what is your real demand. If you can not do it, it will be difficult to do shopping.
- Planning :
- Do not hurry to buy and make decision. Look for possibility how to choice computer, carefully and then buy when you ready.
- Buy necessary things:
- Well calculate how to spend your money for own necessary device. Do not pay attention for producer's suggestions, called ver good. Only satisfied your own suitability. Spend your money for additional device based on thinking how use them.
- Чанарыг дээдэлж гvйцэтгэлийг орхигдуулах:
- Гvйцэтгэл нь компьютерийн ертєнцєд хамгийн том байр суурийг эзэлдэг. Єнєєдєр ихэнх PC-нvvд нь хямдхан компьютерийг бодвол єндєр гvйцэтгэлийг санал болгодог. Тэгээд ч гvйцэтгэл нь жилээс жилд сайжирч байгаа билээ. Гэхдээ чанарын тухай ярихгvй байж болохгvй. Ер нь гvйцэтгэлийн тухай сайхан vгнvvдэд итгэлгvйгээр чанарыг илvv анхаарах нь зvйтэй. Тvvнчлэн баталгааны тухай маш нухацтай ярихаа мартуузай.
- Look for good seller:
- Spend enough time to find reliable partner, seller and firm. Gain more information about above-mentioned people and firms. It is not importance that hardwares valued few dollars more than ordinary. Make contact with seller, if he or she promise good condition. It is save you regret after shopping.
- Use credit card:
- The best way to protect you from seller and order is using credit card. Put bill by credit.
- Cooperate with individual:
- If you have possible, use your friends computer, same you wants, before buying. It helps you the computer you wants, meet your demand or not.
- Find all information in detail:
- Before buying computer have to study all things in detail such as cost, payment, keep condition, shipment, receive date, etc. These are help you to reduce any argue between you and seller. Carefully read written warning of seller before last payment.
- Fight for yourself:
- You have to fight for yourself, if you damaged lack of your knowing.
Dirty condition
Use computer in clear environment without dust. Computer requires the clearest environment compare with other electric appliance used in room, home and other conditions. Some environment of industry and stations have possibility to kill computer.
Once I saw that a car repair station throw out a computer. There are many machine tools which make dusty in the repair station. Cause of it, inside of the PC covered by thick dust when open it. Dust already penetrated into it and broken.
Best way to protect computer from dust is that install airfresh in your room. Besides, obey all instruction with computer. Do not think that your computer is clean by clean its surface.
Catch virus and protect from it
You should pay attention that your computer is used only by yourself. In this case nobody use your computer. Besides, you protect your computer any virus. Computer's software was created by computer programmers, not God. Any program has possibility to change other programs and create other one. There are no problem for viruses to copy some part of programs into hard disk. Any virus creators take account it to create new virus. One of the worst aspect of the virus, it has perfectly competent to copy itself. A virus can be reproduced as thousands of million times within a second. Few years ago, virus could little damage compare with today. But today they are sound the alarm. There are some ways that they sound alarm. First of all, they exchange data of computers by anyway. It is dangerous for public networks such as internet. Because anyone visits your private information when he or she wants. Internet makes favorable environment for virus creators. The viruses created by them, are possible to reach anywhere and anytime. Do not forget viruses 'visit' everywhere.
Few words about Software
Юуны тvрvvнд бvх компьютерт vйлдлийн систем байх ёстой. Vйлдлийн систем нь техник хангамж болон программ хангамжуудын хооронд гvvр болж харилцан ажиллах бvх боломжийг хангаж єгдєг. Vйлдлийн системийн дараагийн шатанд єєртєє хэрэгтэй гэсэн бvхий л программыг сонгож болно. Яг ижилхэн программ хангамжууд суусан компьютерууд гэж хаа ч байдаггvй. Vгvй ядаж хэрэглэгчээсээ хамаарч тєлєв байдал нь янз бvр болдог. Зарим хvмvvс аль нэг программыг илvvд vзэж байхад нєгєє нь тэс ондоог сонгодог. Ийм байдал нь аль ч РС-д хэрэгтэй бvгдийн хvлээн зєвшєєрсєн программын жагсаалтыг гаргахад саад болдог. Гэсэн ч єнєєдєр зарим программууд тухайн компьютер уг программаар заавал тоноглогдсон байх ёстой мэт болтлоо хєгжиж чаджээ. Ер нь тухайн компьютерийн хэрэглээ, зорилгоос шалтгаалж янз бvр байдаг боловч эдгээрийн ихэнх нь байж чаддаг.
Єнєєдєр ихэнх системvvд Windows vйлдлийн систем болон бусад хэдэн нэр тєрлийн программтай ирдэг. Vvнд:
- Текст редактор:
- Аль ч РС-д хамгийн энгийн редактор ч гэсэн заавал байх хэрэгтэй. Ийм программ байхгvй бол ядаж системийн файлуудыг єєрчилж чадахгvй. Windows vйлдлийн системийн хувьд EDIT болон DOS-ийн командын мєрvvд болон Notepad гэсэн программ байдаг.
- Backup буюу нєєцлєх программ хангамж:
- Windows нь нєєцлєх программ хангамжтай ирдэг. Тэдгээр нь маш энгийн байдаг. Зарим хvмvvс эдгээр утилитуудыг ашиглах ихээхэн дуртай байдаг.
- Энгийн файлын системийн утилитууд:
- Танд хард дискнийхээ файлын системийн алдааг шалгах болон дефрагмент хийх программ шаардлагатай болно. Vvний тулд гадны программ хангамжаас нэг удаа худалдаж аваад хэрэглэж болох боловч Windows дотор энгийн хувилбарууд (Scandisk ба Defrag) байдаг. Адил тєстэй 3 дахь vеийн программ хангамж нь илvv хурдан бас илvv боломжуудыг агуулсан байдаг.
- Файл удирдах систем:
- Windows Explorer нь файлыг зохион байгуулах болон харах боломжийг олгодог. Тvvнчлэн 3 дахь vеийн илvv сайжруулсан программууд байдаг.
- Харилцаа холбоо:
- Энгийн харилцаа холбооны хэрэгслvvд нь сvлжээний программ хангамж, броузер, терминал программуудыг агуулсан байдаг. Энэ бvгд одоогийн Windows-ийн сvvлийн хувилбарт байдаг. Тийм боловч гуравдугаар хувилбарыг сонгон авах нь ашигтай байж болох юм. Олон хvмvvс download хийх vнэгvй сайжруулсан программыг ашиглах дуртай байдаг.
- Вирусны эсрэг программ хангамж:
- Энэ бол маш чухал зvйл юм. Вируснаас болж учир нь олдохгvй болох, єгєгдєл алдах зэрэг явдал маш олон тохиолддог. Иймээс єєрийгєє заавал сайн чанарын вируснаас хамгаалах программаар тоноглох хэрэгтэй. Мэдээж танд нэгийн зэрэг байгаа л байлгvй.
- Нєєцлєх программ хангамж:
- Хэрвээ Windows Backup зарим зvйлсийг хийхэд тохиромжгvй байгаа бол танд яах аргагvй єєр сайжруулсан нєєцлєх программ хэрэгтэй болжээ. (Заримдаа CD-RW болон tape драйверvvд нь сайн чанарын нєєцлєх программтай хамт ирдэг.)
- Шахах хэрэгслvvд:
- Олон программ хангамжууд болон єгєгдлийн бvтээгдэхvvнvvд нь шахсан форматыг дэмждэг болсон билээ. Хэрвээ та файл татаж авдаг болон бусадтай тєрєл бvрийн єгєгдлийг дамжуулах шаардлагатай бол яалт ч vгvй WinZip мэтийн шахдаг программуудыг ашиглах хэрэгтэй болно гэсэн vг.
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