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Computer (English computer, from Latin compute - I think, I calculate), a term adopted in foreign literature (mainly in English); denotes a device that operates automatically according to a pre-compiled program or sequence of commands for solving mathematical and economic-statistical problems, planning and production control problems, etc. The term "computer" is usually equated with electronic computers.
Today computers have become almost the subject of household appliances. Therefore, it is necessary to figure out where is the truth, and where is fiction, and what can be useful from a computer, and what is harm.

The more expensive a computer (or its components), the better it is. Not necessarily - sometimes you can buy not the best components and PCs at a price higher than the price of a newer and higher quality analogue. Some managers, in order to get rid of the "stones" (that is, stale goods), try in any way to sell them from the hands of buyers who are not well versed in technology at a completely unfavorable price. Approximately the same can be done by acquaintances who want to update their, most often, already rather shabby PC at your expense. Therefore, before buying, it is advisable to consult with several people - by applying this simple method, you will significantly reduce the chance of being deceived.

The most powerful and fastest computers make a lot of noise. The power of the computer and its performance have an indirect effect on the level of power consumption and heat dissipation, which means that they heat up more and are more demanding on the cooling system. The noise level from a running PC depends on the quantitative and qualitative characteristics of this system, but does not serve as an indicator of power. By the way, the "noisy" cooling system is not always the best quality (for example, a liquid cooling system operating in passive mode does not make 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, buffer size is important and can improve performance (especially when copying a large number of small files or reading / copying from disk), but proper data caching is sometimes much more useful.

Best keyboard (and mouse) - with more buttons. Perhaps such a keyboard (mouse) is able to surprise your guests with its unusualness and "coolness", but this does not increase the convenience and functionality.

The best audio card - with the most audio outputs (channels). When evaluating the quality of a sound card, you should pay attention to other characteristics (signal-to-noise ratio, level of nonlinear distortion, etc.).

It is imperative to disconnect your computer from the network, as it will constantly consume energy, even when it is off, which will cause considerable 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 must not be turned off from the network, as it may break down or settings may be lost. Completely erroneous opinion. When disconnected from the network, the PC cannot break down, and in order to save the computer settings (BIOS), the computer is powered off from the outlet from a 3.3V battery installed on the motherboard. This battery needs to be changed every 6-24 months (depending on the frequency and intensity of PC use) in order to avoid resetting the BIOS settings (which manifests itself as constant resets of the time and date parameters).

There is no difference between a factory-built computer, a store-built computer, and a home-built one. This is not entirely true. After all, PCs assembled at the factory undergo tests for fault tolerance, stability, component compatibility, etc. before serial production. In a store, and even more so at home, you will most often be deprived of such an opportunity.

In the PC case, all fans are blown to cool the computer. In fact, fans are designed not only for cooling, but also for organizing proper air exchange inside the case. Therefore, some of the fans (usually located in the front) are installed for blowing, and some (most often located at the back) for blowing.

Even a cheap surge protector is a reliable PC protection against any power surges in the network. Unfortunately, this is not the case. Not only a cheap surge protector (which is a normal power strip with a fuse), but also a more expensive surge protector, will not be able to protect your computer from a voltage drop. In this case, only a stabilizer can help.

The inscription "Made in China" reveals a poor quality computer. Perhaps, but not at all necessary. After all, a lot of components are manufactured at factories in the USA, Europe, etc. The above inscription can only indicate the country in which the final assembly was carried out, it does not carry information about the quality of the product.

What is the chipset of the motherboard - this should be the video card (for example, on the chipset from NVclassia, only the NVIdia card should be installed). Misconception. Video cards and chipsets from different manufacturers are quite compatible.

The best way to fix a PC breakdown is a programmer; there is no need to contact an administrator or service engineer. Unfortunately, a programmer who understands a computer "inside and out" is a rather rare phenomenon. Most often, programmers can write a program, but they will not always be able to figure out the hardware and software problems that have arisen. Therefore, in the event of a breakdown, it is best to contact a specialist who understands "hardware".

The mouse will not function properly without a mat. It depends on what kind of mouse we are talking about. For example, optical mice are able to function perfectly on almost any surface, including glossy and polished ones. Moreover, if the surface of the mousepad is decorated with a 3D pattern, it may cause jerky movement of the mouse and make it difficult to use the PC.

Working on a PC can cause neurological and mental illness. According to research, the number of people with a "shattered" psyche is indeed increasing. But is the computer to blame for this state of affairs? Indeed, there are many factors in the world that provoke mental illness. Let us turn to statistics again: among patients of neurologists and psychiatrists, it is extremely rare to find office workers (who, first of all, should experience the harmful effect of the PC on the nervous system). Therefore, the computer is by no means the main cause of nervous disorders.

Computer viruses can harm the health of the user. This is not true. Viruses do not have any negative effect on humans. The only impact of these malicious programs is the stress experienced by the user in the process of removing them, or when, due to viruses, important data disappears, which was not prudently stored in a secluded place.

A computer is a source of harmful radiation (possibly radioactive) that can negatively affect a person. The computer does not emit radioactive radiation, and the low-frequency and low-power (much lower than, for example, a TV set) radiation of a modern PC and its peripheral devices (monitor, scanner, printer) does not harm human health. The only exceptions are the very first cathode-ray monitors, but such a rare technique in our time is quite difficult to find, and even more so to make it work with the performance that a modern person needs.

A cactus, a disk with a "magic spiral" and Chinese characters, chestnuts placed near the monitor, etc. can protect from radiation emitted by the monitor. In fact, none of the above methods can affect the amount of low frequency radiation emitted by the monitor. Modern monitors are designed to minimize the user's exposure to radiation. If you have purchased a rather old monitor, it is best to equip it with a special filter and purchase glasses that protect your eyes from the effect of the "flickering" screen. In addition, following the basic rules of labor hygiene, while working at the computer, you should take breaks every 2-3 hours, do not neglect moisturizing procedures and the use of liquids (tea (preferably green), coffee, mineral water), get a humidifier (especially if the office equipped with air conditioning) or at least a small aquarium. The implementation of these simple rules will bring your health much more benefit than the use of dubious means offered by people who care only about the well-being of their wallet.

A computer is the reason for 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 the simplest calculator. Sometimes identical diseases befall drivers, cashiers, telephone operators, who have nothing to do with the computer. From 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 (like representatives of many other professions) must strictly follow the rules of occupational hygiene and pay attention to the prevention of physical inactivity.

Working on a computer can result in electric shock. Modern computers (like any home appliances) reliably protect the user from such a nuisance (except for improper grounding of a PC or an attempt to disassemble a working computer into its component parts). Using a mouse helps preschool children develop fine motor skills. This is an exaggeration - after all, the movements of the hand in such cases are rather monotonous. Games using small objects, drawing, folding mosaics, puzzles, etc. will be much more useful.

Computers "for the little ones" will teach better than parents. No programs, even the best ones, can replace live communication. After all, a child receives from his parents not only information about the outside world, but also care, attention and love, which no PC can imitate. Although the use of educational games for the kid, of course, does not hurt.

A computer for a child is just a toy, there is no benefit from it, which means that there is no need to buy. 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 decisions on their own, quickly switch from one action to another, acquire communication skills, search and select the necessary information.

The computer can cause conflict in the family. After all, until there was a computer, the cause of the same conflicts was a TV, a movie, a bicycle (like any new toy that your child so hard begged), a puppy (kitten, hamster, parrot), etc. Let's face it - more often than not, the reason is not in the toys and household appliances that the child wants to access, but in the parent-child relationship. It depends on the stability and harmony of these relations how easy it will be to regulate the child's access to the PC. Parents who buy a computer for a child should remember that the user's exposure to the PC 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 the child can spend at the computer. For children of each age category, the time will be different (for example, under 6 years old, a child should spend no more than 20 minutes at the screen, at the age of 7-8 years - 30-40 minutes, etc.). Parents should not succumb to the temptation to allow the child to sit at the computer for 3-4 hours "so as not to interfere" or as an encouragement - this tactic can cause conflicts in the future. It is best to show consistency and consistency - the regulations are so regulations, no indulgences. A hobby (best of all, if it is a dynamic activity, for example, hiking) or playing sports will help distract the child from the computer. In addition, having a serious conversation about why you shouldn't spend too much time in front of the screen will have a positive impact.

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