#CyberSecurity Day #001
Tags: cybersecurity, beginners, tutorial, security
Published: 2023-02-28 20:56:26


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/sdcx10yb07wogkwhpw3a.jpeg)

**_

### Allons-y Alonso!
_**

Greetings!, Today's subject of screens and components. It was an incredibly fun topic while learning and writing. I hope it will be valid for you reading the same things for you.


## LCD screens: screen types, features and usage areas

Today, almost every device has a LCD screen. These screens are used on many devices from smartphones to television. So, what are the LCD screens, what are their features and in what areas are they used?

LCD screens are displays that form an image by controlling the passage of light of liquid crystal molecules. This technology provides advantages such as high color accuracy and low power consumption. However, LCD screens may experience a decrease in image quality from a certain angle.

LCD screens in the market come in different types of TFT, IPS, VA. TFT (thin film transistor) screens are often preferred due to rapid reaction times and good contrast rates. IPS (In-Plane Switching) screens provide wider viewing angles and better color accuracy. VA (vertical alignment) screens have higher contrast rates.

LCD screens are widely used especially on mobile devices and computers. These screens are popular because of their advantages such as high resolution, rapid reaction times and low power consumption. It is also used on LCD screens, television and advertising boards.

**### OLED screens:
 high contrast and bright image quality**

OLED (organic light -emitting diode) screens are popular due to high contrast rates and bright image quality. OLED screens offer excellent blacks and vivid colors because each pixel has a unique light source.

OLED screens are especially used on mobile devices and televisions. These screens are preferred due to their fine structure, high resolution and energy -saving properties. It is also used in new generation devices such as OLED screens, wearable technologies and virtual reality devices.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/w74ag5u85kc3jbwqfded.jpeg)


### OLED screens

OLED (organic light -emitting diode) displays allow you to get a more vivid image by offering high contrast and bright colors. OLED screens have a higher pixel density than traditional LCD screens and have a thinner design thanks to each pixel's own light. In addition, OLED screens can offer longer battery life by saving energy.

### Wireless Screens

Wireless screens are screens that can communicate with other devices through wireless connection. This provides many usage areas such as connecting a laptop or smartphone to a television or monitor. Wireless screens have the functionality of the equipment for easier installation and use.

### Webcam

The webcam is a hardware that provides high -resolution image transfer on your computer. Many laptops are found internally and allow you to make video calls or make online video broadcasts. High resolution provides a clearer and sharp image and many web cames also come with internal microphones.



![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/tvsrktsdjenn4su5ybsz.jpeg)


### Rear light

The background is a light source placed behind LCD screens. This light source makes the display look clearer and bright. The background technology was traditionally used using a technology known as CCFL (Cold Cathode Florescent Lamp). However, today, LED (Light -emitting diode) technology is more widely used due to higher efficiency and lower energy consumption.

### Inverters and digitalizers

In the operation of LCD screens, several important elements such as inverters and digitizers are needed. Inverters are the power source of the CCFL rear lights and allows them to produce light by providing a regular current. Digitalizers convert analog image signals into digital signals, so that the screen pixels become controllable. The correct operation of these elements allows LCD screens to produce the correct image.

**As a result**, technologies such as LCD, OLED and wireless screens can be preferred for different usage areas. Webcams are indispensable for the transfer of image at high resolution, and components such as back light, inverters and digitizers are important elements for the operation of the screens. However, no matter what kind of screen is preferred, correct adjustment and maintenance must be done for a quality image experience. With the progress in technology, more advanced and innovative screen technologies will be encountered in the future.