Why is a phone needed? Speed ​​of the program

As a child, after reading the story “Old Man Hottabych,” I was especially impressed by how Hottabych, with a snap of the fingers of his left hand, creates a telephone “from a single piece of the finest black marble.” True, this phone had one drawback - it didn’t work: “In this case, it’s clear why this phone doesn’t work,” Volka said. — You only made a mock-up of the phone, without everything that is supposed to be inside. And inside the device is exactly the most important thing.” It was then that I became interested in the question of what was inside the phone. One such telephone - however, not made of marble, but of bakelite - stood on my parents’ table, and I, driven by curiosity, took it apart. After assembly, I was left with a lot of extra parts, and my parents had to buy a new phone.

Processor: Qualcomm Snapdragon MSM8916 64-bit 1.2 GHz // Operating system: Android KitKat 4.4 // RAM: 2 GB // ROM: 32 GB // Display: 5-inch (1280 x 720) HD Super AMOLED with Gorilla Glass 3 // Cameras: 13 MP rear with PureCel sensor and optical image stabilization, 8 MP front camera with LED flash // Sound: 1 speaker, 3.5 mm stereo output // Supported communication standards: LTE ( 4G), FDD Band 1,3,7,20; DL 150Mbps / UL 50Mbps, WLAN: WiFi 802.11 b/g/n/ac // Battery: 2300 mAh (lithium polymer), non-removable // Number of SIM cards: 2 micro-SIM // Colors: platinum, gold, gray graphite // Dimensions (W x D x H): 146 x 71.7 x 6.9 mm Weight: 129 g.

Over the past three decades, technology has changed significantly. Inside the Lenovo S90 you won't see what I saw: no carbon microphones, no magnets with wire coils and cardboard speaker cones, no pulse dial with gears, a spring and a split flywheel for the centrifugal speed control. In a modern smartphone, there are generally not many parts that can be taken apart - they are arranged into fairly large non-separable units, and the parts are packed extremely compactly inside the case. It is not always possible to disassemble and then assemble your smartphone yourself. So Popular Mechanics did it for you.

1. The anodized aluminum back cover is available in three colors: platinum, gold, and graphite gray. On matte finish The case does not show fingerprints, so the case always looks clean.

2. The frame increases the rigidity of the body. It also houses some of the structural elements. 3. Super AMOLED display covered with Gorilla Glass protection

3. Capacitive touch sensor (touchscreen) is integrated into the display. A cable for connecting to the motherboard is also visible.

4. Motherboard (main) board with processor, graphics accelerator and memory. The board contains connectors for connecting the display, side power and volume buttons, main camera, front camera, battery and coaxial antenna cable. The board-to-board connector is located on back side fees.

5. Polyphonic speaker

6. Antenna amplifier

7. Main camera. The flash for it is located on the motherboard.

8. Front (front) camera with integrated optical image stabilization system.

9. Board with connectors for connecting a charger and an inter-board cable. The round “tablet” on the wire is a micromotor with an eccentric for vibration alert and tactile feedback when pressing keys.

10. Earpiece speaker.

11, 13. Fastenings.

12. Front camera LED flash.

14. Lithium polymer battery.

15. Tray for two SIM cards.

16. Antenna.

17. Volume and power button cable.

18. Board-to-board loop.

19. Antenna cable.

20. Screws for fastening.

He posted on his Twitter a photo from some sports match, apparently taken on an iPhone 6, obviously impressed by the game and, apparently, without thinking for a long time. So the picture turned out to be... terrible: blurry, noisy, dim, you know, as often happens with phones. And the readers reacted as expected: “someone give him the latest Samsung Galaxy or LG!” But Cook was offended and deleted his post.

It would probably have been more correct for him to laugh it off, but he also responded with dignity - albeit six months later. In the iPhone 7 presented recently, or rather, older model family, 7 Plus, the main innovation was not even the absence, but the new camera. Apple has remained true to tradition: the solutions it has used have, in principle, already been implemented by other manufacturers, so it is not a pioneer. But as is often the case, only Apple's approval heralds the beginning new trend. IN in this case- a new round of evolution of digital cameras.

Now the more there are, the better!

Do you know what the main problem cell phone cameras? Lack of space. It is impossible to squeeze optics into the dimensions of a phone that would collect enough light and/or could significantly change its parameters (roughly speaking, greatly shift the lenses along the axis of vision). This has always been one of the main tasks in optics (to imagine what sacrifices people made for the sake of light, it’s better to look not at the history of photography, but at the history of telescope construction). But with the destruction of the camera and its replacement with a smartphone, the task became exponentially more difficult!

The thickness of a smartphone has long been measured in units of millimeters. And that is why mobile camera lenses are so microscopic. Since there are no materials transparent to visible light that can refract light radically stronger than glass does, it will not be possible to machine a large lens that would focus the rays at such a small distance. The same problem with changeable parameters. Autofocus requires only slight movement of some lenses, but to achieve “zoom” you need not just complex multi-lens designs, but significant movement of parts. And again there is not enough space for this.

Absolutely all the shortcomings of mobile cameras that we have today - the inability to work in the dark, the inability to change the depth of field (“bokeh”: some objects look clear, others are blurred), the inability to make an optical (that is, without loss of quality) “zoom” - directly follow from here. And no amount of digital tricks can fully compensate for them. It’s good, of course, when you have an ultra-high-resolution photosensor - you can cut out pieces from the photo, simulating “zoom,” but little light is still collected.

So what is it, a dead end? But then an idea was born: if you can’t make one large camera, why not make several small ones that work in parallel?

The idea is tricky and requires a lot of digital post-processing to implement - but fortunately, we live in the digital age! Therefore, let's put not one, but two co-directional cameras on the smartphone. And we can have not the same ones, but with different focal lengths: the one with a shorter focus will give us wide-angle vision, and the other will become a “telephoto”, with a narrow field of view, but high magnification. Now we take pictures simultaneously and combine two pictures into one. How is this better?

Firstly, we will collect twice as much light in this way. Secondly, we will be able to accurately estimate the distance to objects in the frame (we essentially have a stereo pair, especially if we move the cameras further apart). Thirdly, we will be able to get two versions of the frame with different depths of field without loss of quality, plus countless intermediate digital approximations, that is, we can make an almost real “zoom”. Finally, fourthly, we will get a wider dynamic range: simply, both the darkest and lightest details will be visible in the image.

As you can see, there are too many advantages not to try to implement the idea. And it was realized, of course. Already at the beginning of 2016, at least two “dual-chamber” products appeared on the market: LG G5 and Huawei P9. Their optical designs are different (in P9, for example, one camera is black and white), but the principle is common: in both cases, information from two cameras is combined in one frame to improve its quality. And the result, in general, is consistent with the theory: such devices actually behave better in low-light conditions and provide better detail.

Apple went even further. Thanks to a powerful coprocessor (as if using elements of AI), iPhone 7 Plus takes full advantage of the capabilities of a stereo pair: it estimates distance, recognizes objects, and can control depth of field with almost no loss of quality. For example, here are two sports reports just filmed on 7 Plus.

What's next? In principle, nothing prevents the trend from continuing geometrically - and such an attempt has also already been made. This is the Light L16 gadget - the essence is made in the form of an independent device of a new generation camera. Android is based on wireless communication, but instead of one regular lens there are 16 small ones - with different parameters, and even placed non-trivially (perpendicular to the axis of view).

It looks mysterious and futuristic, but the result is impressive: the output is a combined image of half a hundred megapixels, which can be viewed as a whole or processed without loss of quality in an unusual way: vary the depth of field within a wide range, “float in” and move away (all this after shooting!), use a huge amount of collected light (here the L16 is already close to professional cameras). True, this miracle costs a thousand dollars and everything is sold out until 2017, but the technology has already been licensed by Foxconn, which intends to produce its own products. So the price, of course, will fall significantly.

But will multicam systems find a response in the hearts of buyers? Is not a fact. Remember Lytro, which, despite all its innovation and promise, “didn’t take off.” Still, I personally believe that multiple co-directional cameras on smartphones will eventually become the norm. Very strongly and easily (after all, absolutely without effort on the part of the user, and also without consequences!) they change mass photography.

, each of us hopes that it will last as long as possible.

However, by making a number of serious mistakes in its operation, we are slowly killing even the best gadget.

But if you stick to simple rules, you can extend the life of your smartphone.

Read also:At what age should you give your child a smartphone and is it necessary to do it at all?

Here are 11 mistakes in using a smartphone that lead to it quick exit out of service.

How to extend the life of your smartphone

1. You never turn off your smartphone

You must completely turn off your phone at least, once a week.

Otherwise, your smartphone battery will die sooner than you expect. According to experts, when the phone works non-stop, the battery drains many times faster than if the battery is allowed to rest at least sometimes.

Also, stop using your phone as an alarm clock. A regular alarm clock is best suited for these purposes. He will wake you up every morning.

This way you will extend the life of your smartphone.

If you do need to use your phone's alarm, try to do it as little as possible and then turn it off during the day.

2. Leave Bluetooth and Wi-Fi always on

If you don't use any apps on your smartphone, then what's the point of leaving them enabled? For example, is it vital that your gadget supports WiFi and Bluetooth when you're walking around the city or chatting with friends?

No? Then it’s best to turn them off and turn them on if necessary.

This way you will reduce the loss of charge, and the performance of the smartphone will increase.

By turning off unnecessary features, you will save energy and extend the life of your phone.

How to extend the life of your phone

3. You use your phone on the street in bad weather. weather conditions

Your smartphone is not designed to withstand ultra-high or ultra-low temperatures, so use it in extreme temperature conditions Not recommended.

This may result in the battery being discharged or the device being completely damaged. Also, if your phone isn't waterproof, you shouldn't use it in the rain or snow.

If you know in advance that you will be in extreme weather conditions, try to at least keep your smartphone in your pocket and use it only when necessary.

Phone charging errors

4. Leaving your phone to charge overnight

It may be quite convenient to charge your smartphone at night while you sleep.

But experts say this is not a good idea.

If your phone is already fully charged but is still charging, it can harm the battery over time and it will start to drain quickly.

Please note that you do not need to charge your smartphone to 100 percent charge, as is commonly believed. Your phone's battery will thank you if you take it off before it reaches 100 percent.

*Try unplugging your phone when the battery is approximately 95-97 percent charged.

Try to charge it during the day rather than at night so you can turn it off when it's almost fully charged or set a timer.

5. You wait until the phone is discharged to 0 percent, and then charge it to 100 percent.

Lithium-ion batteries, which are used in some smartphones, work best when charged between 50 and 80 percent.

So says Shane Broesky, founder of Farbe Technik, a company that produces charging accessories.

When the battery is completely drained, the phone goes into a "deep discharge state". This causes the ions to become unable to hold a charge.

Experts say that partially recharging the phone's charge gives the battery enough energy to continuous operation and battery protection.

In other words, recharging your battery is very similar to snacking between meals during the day.

6. Using a non-native smartphone charger

Many people use a non-original charger for their smartphones. Very often, original cords quickly wear out, fray and break. Therefore, we often have to buy new chargers.

However, they are the ones who can ruin the phone. This is especially true for iPhone chargers. The chargers from this brand are quite expensive, but they are worth the investment.

Using chargers from other manufacturers may damage your phone.

It is also reported that counterfeit chargers can also cause fires and even explosions.

Apple appealed to people to hand over counterfeit chargers and purchase only original products at a discount.

7. Never clean your smartphone

Your smartphone is a carrier huge amount bacteria.

By comparison, toilet seats and pet food utensils contain fewer germs per square centimeter than your phone.

There are also devices that use ultraviolet rays to disinfect your phone. Also, don't forget about your phone's charging port! This is where the most debris accumulates, which can cause your phone to malfunction.

Lint and various debris from pockets or wallets get stuck there and, accumulating, lead to serious connection failures over time.

Therefore, try to ensure that the port is always clean.

Clean it using a toothpick, a thin needle, or even back earrings. However, try to do this as carefully as possible so as not to scratch or damage the device.

8. When walking down the street, always keep your phone in your hands

The demand for stolen mobile devices on the black market is skyrocketing.

According to statistics, about 40 percent of all stolen smartphonesThey are specifically for the iPhone. A person walking down the street with a phone in his hands is a potential target for a thief.

Therefore, for your own safety, try to place your phone away from prying eyes. When away from home, use your mobile device only when necessary.

Nowadays it is difficult to find a person who does not use mobile communication services. Even the smallest representatives of our society already have a functional gadget connected to the World Wide Web called the Internet. Let's try to understand the pros and cons of mobile phones.

What is a mobile phone?

A cell phone or mobile phone is a device designed to transmit voice information over a distance. This process is carried out through the provision of communication services by cellular operators. Their towers synchronize the devices with each other.

Transmitting voice information is only one of the functions that a mobile phone can have. The device itself has small sizes, involves the installation of a SIM card, thanks to which the ability to use communication appears.

Using a mobile phone in everyday life

The telephone in our life serves not only to transmit voice messages. This machine can send short messages, access the Internet and synchronize with GPS stations to determine coordinates.

Nowadays it is difficult to imagine life without a cell phone. Numerous applications that are installed on the device thanks to operating systems make our lives much easier. A modern mobile phone combines several devices that we use constantly.

The phone can serve as an alarm clock, computer, personal nutritionist or fitness trainer. Thanks to apps we can control our motor activity, it becomes possible to monitor nutrition and enter all data into a special program.

Advantages and disadvantages of a push-button telephone

Some conservative people still use the most primitive communication devices. This is convenient if you only need your phone for communication. Let's list the main pros and cons

• simple and accessible interface;
• mechanical buttons for dialing a number or message;
• the battery holds a charge for a long time;
• the devices are strong and durable;
• Older models had strong antennas for communication.

• limited functionality;
• there is no way to take photos or videos good quality;
• using the Internet is very inconvenient;
• small and dim display;
• there is no possibility to expand the functionality with additional applications;
• some models are not designed for new three-pin SIM cards;
• there is no possibility of synchronization with some modern accessories.

Only the most basic disadvantages of push-button phones are listed. From the above you can do next output: If you are an active and modern device user, then a push-button telephone will not suit you as your main device of use. And for older people, a phone with buttons is great option always stay in touch.

Advantages and disadvantages of a smartphone

The most common on this moment telephones. A smartphone is a phone that has an operating system that allows you to install various software on it. Here are 5 pros and 5 cons of phones with an operating system.

1. It is possible to install applications from any area of ​​interest.
2. The device has a built-in camera, which is usually of fairly good quality. This function allows you to use your smartphone as a full-fledged camera, video camera or video recorder.
3. A smartphone can replace a game console. On devices with good characteristics you can play even the most modern games.
4. Big screen.
5. Touch control. The displays respond to several simultaneous clicks, which allows you to zoom in or out the picture, and also allows for comfortable control in games.

1. Electromagnetic radiation.
2. Formation of addiction to social networks or games.
3. Live communication is fading away.
4. The network does not catch everywhere.
5. Weak batteries.

Undoubtedly, the smartphone provides us limitless possibilities in the field of communications. The most important thing is to skillfully use this functionality.

Advantages and disadvantages of a shockproof phone

There is a whole line of super-resistant models of devices that are designed for active people. Let's look at the pros and cons of using mobile phone, which has several levels of protection.

1. Durable case made of shockproof material.
2. Moisture-resistant or waterproof.
3. Durable tempered glass display.

1. Design.
2. Limited functionality.
3. Bulky dimensions.

They are able to maintain their working condition even after falling down from a multi-story building, but in terms of design and functionality they are clearly inferior.

Pros and cons of cellular communications

Mobile phones, which have become an integral part of our lives, are constantly near us. Is it good or bad? Let's look at the pros and cons of cellular communications.

1. You can always call your loved ones and ask questions that concern you.
2. Communication is possible even over very long distances.
3. The Internet, which is available 24 hours a day, gives us required amount the necessary information.

1. Radio radiation, which constantly affects the body, causes damage to all vital systems.
2. Communication is only available within the coverage area of ​​the mobile operator. In areas remote from populated areas, you will not be able to use communication services.
3. Some people become addicted to a cell phone.

Experts recommend using cellular communication no more than 5-10 min/day. During this time, the dose of exposure to electromagnetic waves on the body is not critical. Now let's try to calculate how much time we spend per day on communication. The phone is constantly near us, even during sleep. All this time, the body is exposed to radio radiation.

Pros and cons of Samsung phones

New ones are constantly appearing in the Samsung smartphone lines modern models. The company makes sure that its gadgets respond last word in the field of development modern technologies. Let's look at the pros and cons of Samsung phones.

1. High quality build.
2. Bright, energy-saving Amoled display.
3. Interesting new products functionality: fingerprint detector, voice control, face recognition, etc.
4. High level service.
5. Differentiation of phones by line: budget, middle class, flagships.

1. High cost of devices.
2. Expensive repairs if replacement is carried out with original parts.
3. Over time, Amoled displays burn out.
4. Constantly released operating system updates eventually become irrelevant for older devices, so you have to change your phone to a more modern one.

Pros and cons of Android devices

Smartphones based on the Android operating system are the most popular nowadays. This is due to the ease of use of the platform and the simplicity of the interface. The following are the pros and cons of Android phones:

1. Simple menu, convenient controls.
2. A large number of programs for any version of Android.
3. Customization. Any Android phone can be customized by making individual settings at the system level.
4. Openness of the system. For example, you can make the memory card act as an internal storage device.
5. Prevalence. You can always choose the right model, affordable and functional in properties.

1. Updates. The model range is changing very quickly, and new versions of the operating system may already work unstable on previous models.
2. Malfunctions. Android phones most often experience freezes during operation. The loading speed and overall dynamics of the system are at a fairly low level, especially if we are not talking about flagship smartphones.

Despite existing negative sides, smartphones based on the Android operating system are gaining increasing popularity among users.

Pros and cons of children using phones

The communications and telephony industry has a particularly strong influence on the younger generation. Even the smallest children already know how to turn on their favorite game on their smartphone. Let's look at the positive and negative aspects of the influence of phones on children.

1. The child always stays connected.
2. You can track the exact coordinates of your child using a GPS receiver.
3. A telephone with Internet access can become an assistant in the educational process.

1. Electromagnetic radiation harms children's developing organism.
2. Entertainment applications and games distract from studying.
3. A gaming addiction develops and the child becomes withdrawn.
4. Interest in active and intellectual live games is lost.
5. There is stress and hysteria when there is no opportunity to use the phone or the Internet.

Modern children have become so dependent on electronic devices and phones in particular that in some cases they project the digital world of games onto real conditions life. The cruelty and instability of some children in most cases is associated precisely with gaming addiction.

Modern devices

Modern phones made using innovative technologies, have wide functionality. It is very convenient and practical to use one device, which includes the functions of a dozen other devices. The compact size of a modern phone allows you to constantly carry it with you without any discomfort.

Some advanced users change several devices per year. This is due to the fact that new models are constantly being released that have minor differences from their predecessors. The most interesting functional new products for last years are listed:

• fingerprint detector;
• face recognition;
• voice control;
• remote control of other devices from your phone;

These are just some of the functions that are present in the functionality of a modern phone. WITH further development digital technologies devices will be even more powerful and smart.

Finally

Considering the pros and cons of cell phones, we can conclude that these devices give us many advantages in terms of communications, and also allow us to use advanced functionality in various fields of application.

Mobile phones play an important role in our, modern world. Almost every person now has a mobile phone. People use it to call, watch videos, listen to music, take photos, play, in the end. Mobile phone is very important in our life, with the help of a mobile phone we can do everything from reading ordinary cooking recipes to making transactions on a large scale.

Why do you need a mobile phone?

People spend a lot of time, no, not with family, not with friends, not at work, but on the phone. Even when you sleep, it works, maybe even downloads some information for later use.

But still, the main and, of course, the most necessary function is communication. Just think about it, a phone helps you cover huge distances! But it cannot replace live communication...

Do you need a phone? Yes, you can use your phone to great distance hear and even see native voices and faces. If you are on the road and rarely see your loved ones, the phone will help you not to forget, not to become discouraged and, most importantly, to hear the voices dear to you. You can use your phone to capture most beautiful places, important events, performances by your favorite group or actor. The phone is important Everyday life.

Common platforms

Many people wonder which phone is best to buy. Briefly about popular platforms:

• Android is a fairly lightweight platform, budget-friendly and the most common one today.
• Iphone is very easy to use, not cheap.
• Windows Mobile - Windows-based phones, versatile, quite a lot of functions.
• Symbian is an outdated but effective platform, if you need to make calls or listen to music, then choose it, it's cheap.
• Palm, Linux, BlackBerry - these three platforms are united by the fact that they are all outdated, they were once quite popular, but new products have driven them out of the market. You can buy a phone from such a calling platform.

Important Features

Most modern phones have features such as:

• Bluetooth is a data transmission technology based on short-range radio communications. Using Bluetooth, you can transfer any information to another device.
• Wi-Fi is a technology for accessing a local network and the Internet; using Wi-Fi you can access social media, visit websites, communicate on Skype and much more that requires the Internet.
• An organizer is a set of useful programs, usually it includes: alarm clock, stopwatch, timer, clock, audio profiles, and the like. It will help you not to forget something important, not to oversleep on your way to work, keep track of time, or simply feed your pet.

Choose a phone at your own discretion, but remember the main thing: it should be easy to operate so that no difficulties arise.