What do the most common technical terms mean?

We often encounter idioms and abbreviations on the boxes of devices that we own or while browsing the technical websites and we do not know what these terms and abbreviations mean, and our knowledge of them will clarify many things for us and make it easy for us to understand many technical topics and device specifications, so we mentioned an article explaining the terms on the back IPhone and iPad devices - find it on this link- In this article, we will clarify the most prominent terms and abbreviations that confront us.

Networks:

It contains many shortcuts that confused me and I spent a long time searching for their meanings and reading about them, and the reason is that I see symbols appear and disappear next to the network in my mobile and I wondered what they mean? Here are the answers:

Mobile: It is an abbreviation for Global System for Mobile, and it is a technology for connecting mobile devices to each other and to the Internet using the second generation 2G covering vast areas that are carried out by the network operator in each country, and it is the most covered because it is the oldest and is available in all parts of the world.

GPRS: This technology is the development of the GSM network and it has been known as 2.5G, which is an abbreviation for General Packet Radio Service, and the rate of data transfer in it is between 56 and 114 kilobits / second, and its price is calculated for each one megabyte, and the consumption of GPRS technology is usually in surfing the Internet.

EDGE: Its origin is Enhanced Data GSM Environment and from the name we realize that it is a second development of the GSM network, which is the preparation for the 3G and also known as 2.75G, as it allows the transfer of data times faster than its predecessor, and the transmission speed may reach 384 kbps.

HSPA: It is the fastest data transmission network that actually reached 7.2 Mb / s as an upload speed and 5.8 Mb / s as an upload speed, which is an abbreviation for High Speed ​​Packet Access and it is currently widely used everywhere because the fourth generation is not widely spread, and there is an advanced generation One of them is known as HSPA +, and it supports receiving data with a speed of 84 Mbps, which is the start of the fourth generation.

 LTE: It is the fourth generation 4G network, which recently began to spread, and operators and device companies compete to support it, which is an abbreviation for Long Term Evolution, and its data transfer speed reaches 100 Mbps, which is the fastest in its field.

GPS: It is the famous global positioning system and its origin is the Global Positioning System, which is a free service that uses satellites and is received by devices with GPS service to show information such as the user's location on the map, the closest route to his destination, street names, and others.

Screens:

Pixels: A very small square that contains a number of basic colors that make up the image by the lighting from the screen, and the quality of the screen varies according to the amount of pixels per inch and is symbolized by PPI, meaning pixels per inch - inch -. Also, the pixel strength varies with its brightness and size.

LCDIt is a liquid crystal display, which is a popular display technology used in many televisions, smartphones, etc. to this day, and it consists of a layer of crystals arranged on a thin surface supported by a backlight that provides the pixels with light to show the image on the screen as you see it, and the LCD screen is characterized by its thinness Lighter weight, reduced energy consumption, and more comfortable to the eyes.

LED : It is an evolution of LCD screens, originally called Light-Emitting Diode, relative to the second light emitter installed behind the screen, which is the source of its lighting. It is thinner and lighter than the older generation "LCD" and also less energy consuming.

AMOLED: It is an abbreviation for Active-Matrix Organic Light Emitting Diode, which is an evolution of the LED screen, and the difference between them is that in AMOLED screens, each pixel is accompanied by a transistor whose task is to supply this pixel with energy, which means that each pixel in this screen has a special power source, which gives brilliant clarity and colors to the screen of your device And this technology is usually used in portable devices such as smartphones, and it is not practical for large screens such as televisions due to their high costs.

Connectivity and data:

USBThe most famous connection port (the most famous thing in the world), which is an abbreviation for Universal Serial Bus, which is a port specialized in transferring data between different devices and operating devices related to the computer (such as a mouse, keyboard, etc.) and can operate many devices without the need for an external power source, but rather uses the power of the connected device With it, which is usually the computer, and the latest development of this technology is USB 3.0 as it is ultra-fast in transferring data, with a speed of up to 10 GB / s.

IR: It is the famous Infrared technology that allows data to be transferred between two devices together, provided they are facing one line, and this makes it impractical in this area, and it also allows remote control and remote control (the remote control uses this technology).

Bluetooth: IR technology is not practical in transferring data, so Bluetooth is the solution as it allows devices to be connected and transfer data between them, even if they are in different rooms, provided that they are all in a specific area that bluetooth can cover, and this technology is used a lot in the present day, especially in connecting devices with each other, such as The keyboard, mouse, and various accessories, whether for the computer or the car, etc., where the devices can be paired with each other by means of it once and then remain connected without the need to repeat the steps.

As for the name Bluetooth, it is said that it took the name of a Danish king (Harald Blåtand) who lived in the tenth century AD, famous for his unique ability to communicate with others.

Wi-fiWireless Fidelity: It is an acronym for Wireless Fidelity and is used to define any of the wireless communication technologies in the IEEE 802.11 standard, which is the technology on which most wireless WLAN networks today are based. In transmitting and receiving data, its latest standard today is 802.11ac.

Micro SD: It is a removable memory card used to store and transfer data and it is an abbreviation for Secure Digital, and the word Micro denotes small size, and it is commonly used in phones, cameras and any device that can increase its storage area, and the storage capacity supported by phones reaches 128 GB.

Photography:

HDR: This technology combines a group of (two or more) images that are exposed to light differently from each other, and it creates a balance for the lighting of the image in terms of areas of shadows and brightness, thus solving the problem of excess surfaces and dark shadows in different places of the same image, which is an abbreviation for High Dynamic Range Imaging. See This article For more.

slot The lens: It is an opening inside the camera lens that can be controlled by narrowing or opening it to obtain the appropriate amount of light, so the more the lens is open or wide, the more light is entering, and vice versa. The aperture is always denoted by (number / F), so the lower the number accompanying the letter F, the greater the aperture of the lens and allows a greater amount of light to enter.

Sensor: It is the sensor, which is the main part of the digital camera and is responsible for receiving the reflected light from the scene through the lens and converting it into an electrical image in order to process it and store it. The sensor cannot recognize the colors and all it can do is recognize the intensity of the relatively incident light and therefore make a mask of colors at the same level Accuracy.

Sources: Wikipedia | ask | about