Hello, dear reader. It’s been a while since I wrote something on SG about hardware. Gordon0FreeMan has already promised so many times, so many interesting iron things have happened since the last hardzor, he even managed to get banned… Well, why not, thanks to forums like flyback.org.ru, and also became addicted to high-voltage equipment, generators of all sorts of beautiful discharges that the local people make:

It is quite possible that it will happen so soon that a reliable sidekick will bring the necessary parts to me, and I will definitely show you the embodiment of my epic idea associated with torches on pentodes and modding of iron! Since I only write on SG blogs, it may turn out to be an unusual exclusive)

Well, in the meantime, coming down from heaven to earth, I’ll write down an educational program for you from a mixture of my and Wikipedia’s reserves of knowledge, because the topic has already matured in the topic about choosing an e-book, and at the same time I’ll collect pluses. Already lost 40 rate units. It’s a shame))

So, if you had Tetris as a child, mentally tick yourself. If you have taken it apart – – mentally highlight the checkmark with a black marker and circle it!
You had a happy childhood. If you have played two Tetris games, give yourself a second checkbox. If you took them both apart completely, you could perform an extremely interesting trick..

Pull the screens out of the Tetris, tear off the rubber conductive contacts (those pink rubber bands), and scrape off the white coating so that only glass remains. And, being very attentive, you notice that they are somehow dark..

Then you can look at a glowing lamp (for example, in a chandelier) through both pieces of glass at once, holding one after the other. By changing the distance between the glasses or twisting them around the axis of symmetry, you can notice how the light from the chandelier in them slightly changes its color, and then it disappears altogether.

This is how you had magic glass in your childhood, but many probably didn’t know. What the hell is this? This is a completely different question.

The effects of light loss in glass pieces are nothing more than polarization. The fact is that Uncle Maxwell said: “Light is an electromagnetic wave.”.

That is, a bunch of electric and magnetic oscillations in space, God knows how, running with each other. If you drive them cancer at some angle to each other, in space, then you can catch some good profit. get various interesting effects, like what you could see while torturing glass from Tetris))

Now, in fact, we need to explain what liquid crystals are:

In fact, this is a chemical substance, https://sailorbingocasino.uk/login/ for example, called a terrible curse word (if you are under 14, close your eyes) cholestyryl benzoate, which is brought to a semi-liquid-semi-solid state, and so sophisticatedly that it exhibits crystalline properties. And the most important thing among them is such as optical anisotropy. Like: “WAY-WAY, squeal, I see it, I shine it with a flashlight and I don’t see it.”. »

In classic ANDUfine Crystal Screen making a sandwich from the picture. They rub the glass with a special cloth so that MICRO-grooves less than a tenth of a millimeter wide remain in it, so that the nematic (a type of creepy crystal) would be packed there. When voltage is applied from the battery, the domains (special packs of molecules) are oriented and, VOILA, we see the image))

And here you can probably say: “Cool, what’s the fun?"And the funny thing is that now you are prepared for secret knowledge. LCD displays themselves USE SO LITTLE ENERGY that they can live for MONTHS on two batteries.

All the energy is consumed exclusively by the backlight and, in the last 5 years, by the electronic filling, because, for example, decoding HD video of 720 resolution is no big deal, and for every minute you have to pay in watts from the battery.

Little things such as: 22 million colors, viewing angle – 179 degrees, high contrast, can be successfully solved by complicating the design, using advanced glass and various technological features… The main thing: buyers would pay money))..

Naturally, you can read popular information about LCDs on Wik: click

The point of my article is not this, but to show how you can look at equipment in a store: 3 Therefore, let’s move on to the second technology, popular exclusively for readers (that’s what I call e-books, because I’m too lazy to use two words) technology called E-Ink or, more simply, Electronic ink.

And immediately the question: “Who had electrophoresis done?? Raise your hands.“In principle, 75% can be raised mentally, because I’m sure that in a sanatorium or in a treatment room, sure enough, at least once they spanked the belly with square rags with electrodes packed in them.

With the help of such a simple device, using direct electric current, people have learned to rub medicinal substances deep under the skin. There are two more varieties: kata- and anaphoresis. This, accordingly, depends on which electrode is slapped on your belly “+” or “-” (although this is not a fact, this is my speculation). I’ll tell you a secret, even if the doctor didn’t tell you, but you want to find out, all you need to do is, when he leaves, turn the regulator knob to the maximum. If it burns the back, then on the belly, plus, if it actually burns the belly, then “—”. Although I almost got burned then, and I can’t guarantee that the electrodes weren’t mixed up :)))

Actually, electronic paper is an electrophoretic.

Ink poured into microspheres (see picture) is attracted and appears on a transparent coating under the influence of electric current. Absorbed as if by electrophoresis. Hence the high similarity with ordinary paper, because ink is also ink in Africa. And the name E Ink. This is how it should be understood: “Electronic Inc – translated from English, electronic ink”. And now a new “secret knowledge”: it turns out that energy is needed only to change the image on paper! The ink is absorbed and that’s it, the battery is resting! And taking into account the fact that not all E-Ink books have backlighting, it becomes clear why they work for a month without rest, doesn’t it?? Place an LED backlight, and VOILA, the batteries will run out in 10-12 hours. BUT, e-paper needs backlighting only for reading in the dark, and so that we can see. But LCD screens need it constantly, because without light they may not work at all. (For Tetris screens, the role of backlight is played by any external light that is reflected from the white coating that you could scrape off when you disassembled the screen at the beginning of the article).

Again, a cool article on Wiki with the whole story for enlightenment (who needs it):
clack .

So, bypassing the difficult checkmate.apparatus, crystal theory, radio electronics, optical technologies, we come to the conclusions: “so how can you look at readers in a store?»

The answer is simple: “Very non-trivial”. If you need a reader for short-term work of 3-6-10 hours a day, viewing pictures and documents, or just completely stuck with a budget, then it’s not at all necessary to strive for E-Inks and spend your last money on them. And here only two factors become important:
-Convenient screen
-Good battery

You can choose a screen only by relying on your own perception of the world, looking through and trying on each one, and causing torment for sellers, saying “Nope, not at all))”
For some, 4" is enough, and for others, 7" is not enough; for others, the image refresh rate of 4096 Hz will dazzle them, and for others, even at 512, they won’t notice – these are purely individual sensations. There is no point in quibbling about the quality of LCD screens for little money; all of them have been used for more than a year or are guaranteed replacement. The only question is which of the companies will not cause you trouble with trips to the service center. Personally, I vote for PHILIPS, SONY, SAMSUNG and WEXLER. The first three companies have established relationships with suppliers of radio components, and Philips generally have their own plant, so if the book is not “a gray assembly from the basements of the Savelovsky market”, the quality is almost guaranteed. I’ve been using the Wexler T7001B for six months, and apart from design inconveniences, the book doesn’t cause any complaints, the main thing is to adjust the brightness and energy saving settings from the very beginning and change it if the firmware is outdated.

A few words about energy saving, even if you are a sensitive esthete who cannot stand brightness below the maximum, to extend the life of the battery, most books allow you to adjust the shutdown of the screen and the book as a whole, and in slightly more advanced versions there are probably sleep or watchdog modes. What I mean is that rarely does anyone read a page for more than a minute, therefore the backlight off setting can be adjusted, then during an important speech the battery won’t suddenly run out because you’re not turning pages for 15 minutes at a time..

It’s better not to buy into the multimedia features of such books! The sensors are clumsy, the video is slow, the color rendition is not OK, etc. n. For this there are iPad-like ones and jailbreaks for them..

The quality of the battery determines not even how many hours it lasts, but how likely it is to completely die out in six months or a year. This is the problem with most cheap lithium polymer batteries. And there’s no escape here. You can extend the lifespan by being careful when charging. The first 5-7 times it is recommended to completely discharge (until the indicator battery is empty on the display), and charge as much as possible (about 8-15 hours for different models). Then some liberties are possible, such as incomplete charging or discharging.

If you are an ardent reader, or a book is your life companion, and life takes place in places far from the network, then electronic ink is your choice, only for reading at night you may need it over construction sites, and a month without charging is not a problem..

Since I personally, unfortunately, had too little to do with E-Inks, I can only pay attention to the quality of the screen. I saw several times how the screen of familiar owners of this device delaminated – which led to death (books, obviously). Please note that the screen in these books is more than 50% of the cost, and it’s not worth taking the risk once again for a low price.

That’s probably all I have to tell you. For this, I wish you good luck in your e-purchase business and take your leave.

PS: More about sensors later, in the next part of the Marlezon ballet 😉