Wired communication !! ஹல்லோ ஹலோ சுகமா ! ஆமா நீங்க நலமா

 

Your mobile is ringing ! – shows an unknown number ! – how do you take the call ?

 

ஹல்லோ ஹலோ சுகமா ! ஆமா நீங்க நலமா

காலையில் நான்  வரட்டுமா?  கண்ணில் மருந்து தரட்டுமா!

மருந்து தந்தால் போதுமா?  மயக்கம் அதில் தீருமா!!

 

Alexander Graham Bell  - Canadian-American inventor, scientist, and engineer  is credited with patenting the first practical telephone.  For centuries it was communication through wire !! 

Wired communication refers to the transmission of data over a wire-based communication technology (telecommunication cables) and includes  telephone networks, cable television or internet access, and fiber-optic communication. Most wired networks now a days use Ethernet cables to transfer data between connected PCs. 

Then came the ‘wi-fi’ revolution.  Wi-Fi   is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves. Wi-Fi is a wireless networking technology that allows devices such as computers (laptops and desktops), mobile devices (smart phones and wearables), and other equipment (printers and video cameras) to interface with the Internet. It allows these devices--and many more--to exchange information with one another, creating a network. Internet connectivity occurs through a wireless router. When you access Wi-Fi, you are connecting to a wireless router that allows your Wi-Fi-compatible devices to interface with the Internet. 

Wi-Fi is not an acronym; it is a brand name created by a marketing firm that’s meant to serve as an interoperability seal for marketing efforts.  In 1991 in Nieuwegein, the NCR Corporation and AT&T invented the precursor to 802.11, intended for use in cashier systems, under the name WaveLAN.  In 1989 in Australia, a team of scientists began working on wireless LAN technology.  A prototype test bed for a wireless local area network (WLAN) was developed in 1992 by a team of researchers from the Radiophysics Division of the CSIRO (Commonwealth Scientific and Industrial Research Organisation) in Australia, led by John O'Sullivan.  A patent for Wi Fi was lodged by the CSIRO in 1992. The first version of the 802.11 protocol was released in 1997, and provided up to 2 Mbit/s link speeds.  In 1999, the Wi-Fi Alliance formed as a trade association to hold the Wi-Fi trademark under which most IEEE 802.11 products are sold. 

The song at the start is from Dharmam Thalai Kakkum – sung by TM Soundararajan and P Susheela, music of KV Mahavadevan set to the lyrics of Kavi arasu Kannadasan.   Released in 1963, the MG Ramachandran, Saroja Devi starrer was directed by MA Thirumugam and produced by Sandow MMA Chinnappa Thevar, ran for more than 100 days.  

 
Regards – S Sampathkumar
14.11.2024