A computer

A computer


(English computer, from Latin compute – I think, I calculate), a term adopted in foreign literature (mainly English-language); means a device that operates automatically according to a pre-programmed or sequence of instructions, for solving mathematical and economic-statistical problems, scheduling and production management problems, and so on. The term “computer” is usually identified with electronic computers.
To date, computers have become almost the subject of household appliances. But nevertheless, a sufficient number of myths were built around computers. Therefore, it is necessary to understand where is the truth, and where is fiction, and what can the computer be useful, and what is the harm.

The more expensive the computer (or its components), the better.

Not necessary – sometimes you can buy not the best components and PCs at a price higher than the price of a newer and better quality analogue. Some managers, in order to get rid of the “stones” (ie stale goods), try to sell it in any way from the hands of poorly versed in the technology buyers at a completely unprofitable price. Approximately the same can do and friends who want at your expense to update their own, most often already pretty shabby PC. Therefore, before buying it is advisable to consult a few people – using this simple method, the chance to be deceived, you will significantly reduce.

The most powerful and fastest computers are making a lot of noise.

Computer power and its speed have an indirect effect on the level of energy consumption and heat generation, which means that more heat and more demanding cooling system. The level of noise from an operating PC depends on the quantitative and qualitative characteristics of this system, but does not serve as a power indicator. By the way, not always the most “noisy” cooling system is of the highest quality (for example, a liquid cooling system operating in the passive mode does not emit any noise at all, but it can cope with the heat dissipation of a rather powerful computer).

The larger the buffer on the hard disk, the faster the PC runs.

Of course, the buffer size is important and allows increasing the performance (especially when copying a large number of small files or reading / copying from a disk), but correct caching of data is sometimes much more useful.

The best keyboard (and mouse) – with a lot of buttons.

Perhaps, such a keyboard (mouse) is able to surprise your guests with unusual and “steep”, but the convenience and functionality do not increase from this.

The best audio card – with the largest number of audio outputs (channels).

When assessing the quality of a sound card, you should pay attention to other characteristics (signal-to-noise ratio, level of non-linear distortions, etc.).

You should always disconnect the computer from the network, as it will constantly consume power, even when it is turned off, which will do a lot of damage to my budget.

In fact, the standby voltage that is applied to the switched off (but not disconnected from the network) computer is so small that the meter does not respond to it.

The computer can not be turned off from the network, as it may break or the settings may go down.

Absolutely mistaken opinion. When disconnecting from the network, the PC can not break, and in order to save the computer settings (BIOS), the computer is powered from a 3.3-volt battery installed on the motherboard. This battery needs to be changed every 6-24 months (depending on the frequency and intensity of using the PC) to avoid resetting the BIOS settings (which manifests itself by permanent resetting of the time and date settings).

There is no difference between a factory assembly computer assembled in a store and assembled at home.

This is not quite true. After all, PCs assembled at the plant are tested for fault tolerance, stability, compatibility of components, etc. before serial production.In a store, much less at home, you will most often be deprived of such an opportunity.

In the PC case, all the fans work to blow, cooling the computer.

Actually, the fans are not only designed for cooling, but also for organizing the correct air exchange inside the case. Because part of the fans (usually located in the front) are installed on the blowing, and the part (most often located behind) – on the blowing.

Even a cheap network filter – reliable protection of the PC from any power surges in the network.

Unfortunately, this is not the case. Not only a cheap mains filter (which is an ordinary extension cord with a fuse), but also a more expensive one, protecting from increased voltage, will not be able to protect your computer from voltage drop in the network. In this case, only the stabilizer can help.

The inscription “Made in China” reveals a poor-quality computer.

Perhaps, but not necessarily. After all, many components are produced in factories in the countries of the USA, Europe, etc. The above inscription can only indicate the country in which the final assembly was made, it does not carry information about the quality of the product.

Which chipset of the motherboard – this should be a graphics card (for example, on a NVclassia chipset it is necessary to put only the NVIdia card).

Wrong opinion. Video cards and chipsets from different manufacturers are completely compatible.

The best way to repair a PC is to fix the programmer, there is no need to contact the administrator or the service engineer.

Unfortunately, a programmer who understands the computer “from and to” is a rare phenomenon. More often than not, programmers can write a program, but they can not always figure out the hardware problems that have arisen. Therefore, in the event of a breakdown, it is best to contact a specialist who understands the hardware.

The mouse will not work properly without a rug.

It depends on which mouse you are talking about. For example, optical mice are able to function perfectly on virtually any surface, including glossy and polished. Moreover, if the surface of the rug is decorated with a 3D-pattern, this can cause the mouse to move in jerks and make it difficult to work on a PC.

Working on a PC can cause neurological and mental illness.

According to studies, the number of people with a “shattered” psyche really increases. But is it a computer that is to blame for this situation? After all, there are many factors in the world that provoke mental illness. Let us turn again to the statistics: among the patients of neurologists and psychiatrists it is extremely rare to meet office workers (who first of all should experience the harmful influence of the PC on the nervous system). Consequently, the computer is by no means the main cause of nervous disorders.

Computer viruses can harm a user’s health.

This is not true. No viruses have any negative effects on humans. The only impact of these malicious programs is the stress experienced by the user in the process of their removal, or in the event that important virus data is lost due to the viruses, which were not carefully stored in a secluded place.

A computer is a source of harmful radiation (possibly radioactive), which can negatively affect a person. Компьютер The computer does not emit radioactive radiation, and the radiation from a modern PC and its peripheral devices (monitor, scanner, printer) does not harm human health, and low-frequency and low-power (much less than, for example, TV). The exception is only the very first electron-beam monitors, but such a rarity technique in our time is quite difficult to find, and even more to force to work with the right performance of the modern person.

From the radiation emitted by the monitor, it can protect the cactus, the disk with the “magic spiral” and Chinese characters, chestnuts placed at the monitor, etc.

In fact, none of the above methods can affect the number of low-frequency emissions emitted by the monitor. Modern monitors are designed to minimize the impact of radiation on the user. If you purchased a fairly old monitor, it’s best to equip it with a special filter and buy glasses that protect your eyes from the effect of the “flickering” screen. In addition, by following elementary rules of occupational health, during work at the computer, you should take breaks every 2-3 hours, do not neglect moisturizing procedures and use of liquid (tea (preferably green), coffee, mineral water), get an air humidifier (especially if the office or equipped with air conditioning) or at least a small aquarium. Execution of these simple rules will bring your health much more benefits than the use of dubious means offered by people who care only about the welfare of their wallet.

Computer – the cause of the appearance of excess weight, hemorrhoids, diseases of the lumbosacral spine, etc.

It should be clarified – exactly the same health problems were observed, for example, among accountants long before the appearance of not only a PC, but also a simple calculator. Sometimes identical diseases are comprehended by drivers, cashiers, telephonists, who have nothing to do with the computer. From all of the above, we can conclude: the cause of these diseases is not the PC itself, but “sedentary” work. Therefore, in order to avoid unpleasant consequences, office workers (as well as representatives of many other professions) must strictly follow the rules of occupational hygiene and pay attention to the prevention of hypodynamia.

Working on the computer, you can get an electric shock.

Modern computers (like any home appliances) reliably protect the user from such trouble (except – improper PC grounding or an attempt to disassemble a working computer into parts). Using a mouse helps children of preschool age develop fine motor skills. This is an exaggeration – because the movements of the brush in such cases are rather monotonous. Much more good will bring games using small items, drawing, folding mosaics, puzzles, etc.

Computers “for the youngest” will teach better than parents.

No programs, even the best ones, will replace live communication. After all, a child receives from parents not only information about the outside world, but also care, attention and love that no PC can simulate. Although the use of developing games to the kid, of course, does not hurt.

A computer for a child is only a toy, there is no use from it, and therefore, it does not need to buy anything.

No, according to psychologists, working with a computer contributes to the development of attention, creativity, logical and abstract thinking. Computer games help children learn to make their own decisions, quickly switch from one action to another, acquire communication skills, search and select the right information.

Computer can cause conflict in the family.

This is not quite true. After all, until there was a computer, the reason for the same conflicts was television, cinema, bicycle (like any new toy that your child was so hard to ask for), a puppy (kitten, hamster, parrot), etc. Let’s face it – most often the reason is not in toys and household appliances, which the child wants to gain access to, but in relationships, parents are children. It is from the stability and harmony of these relations that it depends on how easily the child’s access to the PC will be regulated. Parents buying a computer for a child should remember that the impact of the PC on the user depends on the time spent at the monitor (for example, a short stay at the computer improves concentration, and too long – worsens). Therefore, in order to avoid further quarrels and disagreements, it is necessary to determine in advance how much time a child can spend at the computer.For children of each age category, the time will be different (for example, up to 6 years the child should spend at the screen not more than 20 minutes, at the age of 7-8 years – 30-40 minutes, etc.). Parents should not be tempted to allow the child to sit at the computer for an hour or three to “not interfere” or as an encouragement – this tactic can cause conflict situations in the future. It is best to show consistency and consistency – regulations so the regulations, no indulgences. To distract the child from the computer will help a hobby (best if it is a dynamic activity, for example, hiking) or playing sports. In addition, a positive impact will be made initially (before buying a PC) a serious conversation about why it is not worth spending too much time on the screen.

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