Hardware Components Of Input Peripherals

It is understood as an input peripheral to the equipment external to the computer tower that allows the introduction of information to the system . Within the main hardware we must consider the keyboard and mouse.


The keyboard has a collection of keys (matrix) that allows you to enter commands into the system and perform certain predefined operations. The keyboard has a microprocessor that transforms the signals that arrive from the matrix to electrical information that can be interpreted by the equipment to which it is connected.

There are different types of keyboards on the market depending on the utility that they are going to be given:

The flexible keyboards are rolled or folded to occupy little. These specialized wraps are highly appreciated by travelers, who save space in their suitcases. They are also used in environments where the level of cleaning required is very high (laboratories and hospitals, to name a few cases).

The projected keyboards work thanks to a projector, cameras and sensors. The image of the matrix is ​​projected onto a flat surface and the movement of the hands on it is captured. They are still insufficiently developed, but they are used in the same applications as the previous ones.

Another case of specialized keyboards are those of the gaming segment . The most appreciated are those that come equipped with mechanical keys, although the ability to configure shortcuts , programming macros, simultaneous key registration and aesthetics are also valued . The transmission latency of these devices is very low to minimize the impact on the user’s games.

On keyboards for writing, programming or databasing , the resistance of the keys is lower to avoid injuries associated with repetitive motion stress. They also allow a more comfortable position of the hands on the device to decrease the incidence of carpal tunnel syndrome. Ergonomics is one of the fundamental factors in the design of these models.

The use that will be given to the keyboards is not the only factor that allows a classification. According to the connection method with the computer, we differentiate wired and wireless keyboards . The latter use a wireless connection via Bluetooth, Wi-Fi, radio or infrared. The former use USB or PS / 2 cabling.

The mechanism behind the operation of the keys also allows for a fundamental differentiation. There are mechanical keys, classic keys, membrane keys, and chiclet keys (rare).

The first deserve a separate paragraph. The mechanical keys have an individual push switch that improves the precision of the device . Multiple switches are available: Cherry Mx (the most popular), Razer, Kailh, Romer-G, QS1, and Topre. When purchasing mechanical keys, consider their actuation point, travel, percussion sound, and weight .

A little-known benefit of mechanical keyboards is the ability to replace broken keys individually without detaching the entire keyboard. This positively affects the longevity of the equipment, making mechanical keyboards an environmentally responsible option.

Finally, the keyboard layout must be considered. Term that refers to the available keys and their position in the matrix; geographically varying topology as follows:

AZERTY : specially designed for Francophone countries, with French, Belgian and Arabic variants combined (present in North African countries such as Morocco, Algeria or Tunisia).

QWERTY : The most common layout, available in German, Spanish, and Japanese versions.

QWERTZ : used almost exclusively in German-speaking countries: Germany, Austria, Switzerland …

Limited use distributions : Colemark, Dvorak, HCESAR …

Special Distributions : Braille and Similar

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