Computer hardware includes the physical, tangible parts or components of a computer, such as the cabinet, central processing unit, monitor, keyboard, computer data storage, graphics card, sound card, speakers and motherboard. By contrast, software is instructions that can be stored and run by hardware. Hardware is so-termed because it is "hard" or rigid with respect to changes or modifications; whereas software is "soft" because it is easy to update or change. Intermediate between software and hardware is "firmware", which is software that is strongly coupled to the particular hardware of a computer system and thus the most difficult to change but also among the most stable with respect to consistency of interface. The progression from levels of "hardness" to "softness" in computer systems parallels a progression of layers of abstraction in computing.

Currently, for the production of consumer monitors are used two of the most basic, so to speak - the root, the manufacturing technology of matrices - LCD and LED.
https://docs.google.com/spreadsheets/d/1vsgpMU9VReuvF5kVnKvWreWLkdZc-JbraI_fQw4swfA/edit?usp=sharing
LCD is an abbreviation of the phrase "Liquid Crystal Display", which translated into all understandable Russian language means a liquid crystal display, or LCD.
LED stands for “Light Emitting Diode”, which in our language is read as a light-emitting diode, or simply LED.
All other types are derived from these two pillars of the display industry and are refined, upgraded and improved versions of their predecessors.

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Not the last factor when choosing a smartphone is its design, body and materials from which it is made. And for many users it is even more important than technical characteristics. What makes the case of modern smartphones, what are the advantages of this or that material and what should you choose - these and not only questions will be answered in this issue of the HARD heading.

Plastic. The cheapest and most common material for the manufacture of cases of smartphones. There are many varieties - from cheap ABS plastic to alloys with carbon fiber and fiberglass impurities. Today, the most popular solution for a plastic case is polycarbonate. Let's look at its main pros and cons.

Mobile devices are devices such as smartphones, Internet tablets, e-books, telephones, PDAs, netbooks. Their main feature is of course the size. In the era of total miniaturization, mobile devices crowd out the so-called “stationary”: tablets and smartphones, smart watches, virtual reality glasses and other “mobile”, portable, lightweight equipment are replacing computers.