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How to choose the keyboard?
|/img >/img src="//images/stories/tip/comp-progs/keyboard-choice-1.jpg" alt="How to choose the keyboard?" align=left title="Как выбрать клавиатуру?" /> Whatever advanced and "fancy" were modern personal computers, – not to do without data input devices. The keyboard belongs just to such devices. How to choose the keyboard?|
Computer keyboards essentially did not change since the invention. However, now they can carry out much more various functions. Keyboards, except standard keys, contain also multimedia now – keys which allow to start various applications from the keyboard, to carry out various actions with multimedia files.
So, we start a keyboard choice. What it is important to consider? First, the choice of this or that model of the keyboard is influenced by a circle of tasks for which decision it is intended. The keyboard containing only standard keys (alphabetic, the digital block, functional F1-F12, etc.), - "simplest", but and the most inexpensive. Such keyboard perfectly is suitable for the solution of the majority of standard tasks: typing, work on the Internet, etc.
The multimedia keyboard as it was already mentioned, facilitates work with different multimedia applications as contains buttons of management of a sound, for example, or the scrollings buttons of video files. Are of similar keyboards is more expensive than the standard.
Game (gaming) keyboards are optimized for work in the game mode. Such keyboards may contain keys, useful to the gamer, and even the small screen on which the useful information will be displayed.
The following factor influencing a keyboard choice are its technical parameters. For example, mechanism of keys of the keyboard. There are three main types of the mechanism of keys:
Operation of membrane keyboards is based on short circuit of two membranes when pressing keys. Return of a key happens at the expense of a rubber dome. Such design well protects contacts of the keyboard from the spilled coffee, for example, as all of them are from the inside of a special plastic foil.
In semi-mechanical keyboards more durable metal contacts, than in the membrane are used. Return of a key is also carried out by means of a rubber dome.
Mechanical keyboards are least protected from hit on schemes of the spilled liquids or dust. Return of keys to them happens due to action of a spring. Advantage of mechanical keyboards is their durability.
Directly for the user there can be not a mechanism of keys, but tactile parameters of the keyboard, such as rigidity of keys and length of the course more important.
Rigidity of the keyboard is defined by force with which it is necessary to press on a key for its operation. Size in 55 g is considered optimum. If the keyboard excessively rigid, it is inconvenient to type the text on it – too strongly it is necessary to press on keys. And too soft keyboard provokes a set of excess symbols even at easy pressing to keys.
For many users also important existence of a so-called click of the keyboard – characteristic click when pressing keys. Such click is convenient when typing as allows to feel pressing of a key precisely.
The interface of connection of the keyboard to the computer – one more important parameter. Standard port for connection of the keyboard – PS/2. Also the USB interface is used. For some users useful will be a special wireless keyboard.
Ergonomics of the keyboard is also important from the point of view of convenience of use. So-called ergonomic keyboards contain the same standard set of keys, as usual, but they are executed taking into account the maximum convenience to the gathering. This problem is very actual as people who type texts of large volumes, often have diseases of hands – from their inconvenient arrangement.
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