About Electronic Devices

 ElectronicDevices

 Electronic Devices is most used things in this world. This is a big market industry on earth.

All peoples have use electronics device such as LED, Mobile phones, laptops, Computers, Air pods, Smart watch etc.

In financial year 2022, the market value of electronics across India was over nine trillion Indian rupees. This market value was estimated to increase to over 17 trillion Indian rupees by financial year 2026.

Now talk about some electronic devices:

1. Mobile Phones:

 A mobile phone is a wireless handheld device that allows users to make and receive calls. While the earliest generation of mobile phones could only make and receive calls, today’s mobile phones do a lot more, accommodating web browsers, games, cameras, video players and navigational systems.

Mobile phones in the 1950s through 1970s were large and heavy, and most were built into cars. In the late 20th century technology improved so people could carry their phones with ease.

Although Dr. Martin Cooper from Motorola made the first call using a mobile phone in 1973 (using a handset weighing 2 kilograms), it did not use the type of cellular mobile phone network that we use today.

The first cellular mobile phone networks were created in 1979 in Japan. Now almost all Urben areas, and many country areas, are covered by mobile phone networks.

2. Computer:

 A computer is an electronic device that is designed to process, store, and retrieve information. It can perform a variety of tasks based on instructions provided by a user or a program. Computers have become an essential part of our daily lives, and they are used in various fields such as education, business, entertainment, research, and communication.

The history of computers can be traced back to the 19th century when Charles Babbage designed a machine called the Analytical Engine, which was intended to perform complex mathematical calculations. However, it was never completed. The first programmable computer was the Harvard Mark I, which was developed in the early 1940s. It was a massive machine that used punched cards for input and output.

3. LED TV:

A flat panel LCD TV set that uses LEDs (light emitting diodes) for its backlight source rather than the earlier cold cathode fluorescent lamps (see CCFL). Smaller, more power efficient and having a greater optical range than the fluorescents, LED TVs produce deeper blacks and more saturated color. In 2005, Sony offered the first LED TV. Although an LED TV is really an LCD TV with LED backlighting, the industry branded them as LED TVs to avoid monikers such as "LED backlit TV" or "LED-based LCD TV." Today, most TV sets are LED TVs.

White or RGB

White LEDs are less costly, while red, green and blue (RGB) LEDs provide a richer color gamut.

Backlights: Direct Lit, Edge Lit and Full Array

There are three "local dimming" backlight techniques for LED TVs, all of which dynamically dim the light behind the black areas of the image to make them darker. The more economical direct-lit method uses LEDs in a sparse array across the back. Because the LEDs are farther away from the screen to allow each light to spread to more pixels, direct-lit TVs are as thick as the older CCFL fluorescent lamp LCD TVs. Edge-lit LED TVs beam light to the back of the screen from the sides and allow for ultra-thin cases. Although some designs provide selective dimming, they are not as effective as the full array. In addition, they have a tendency to be brighter at the edges than at the center. The full array covers the entire back of the screen with LEDs. Although the case is thicker than edge-lit designs, the full array provides better details in shadows and more contrast than the other methods. 

4. Air Pods:

Air Pods are wireless Bluetooth earbuds designed by Apple Inc. They were first announced on September 7, 2016, alongside the iPhone 7. Within two years, they became Apple's most popular accessory. Air Pods are Apple's entry-level wireless headphones, sold alongside the Air Pods Pro and Air Pods Max.

Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks. In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 meters.

It employs UHF radio waves in the ISM bands, from 2.402 GHz to 2.48 GHz. It is mainly used as an alternative to wired connections to exchange files between nearby portable devices and connect cell phones and music players with wireless headphones.