Wifi kaam kese krta hai? ye sawal apke mann mein bhi aya hoga, ayiye isko samjhte hai
Wifi kya hota hai phele ye jaan lete hai Wifi yani (wireless fidelity) ye ek wireless LAN technology hai, jo wired internet connections ko wireless internet connections se replace krti hai. Router ya hotspots ka use hota hai wifi network set up krne ke liye.
WLAN use krta hai radio waves technology ka jo apke device aur router ke bich frequencies ke dwara information transmit krta hai. Wifi aur WLAN ye dono ek dusre per depend krte hai local devices se connect hone ke liye. Wifi doo tarah ki frequinces per kaam krta hai 2.4 gigahertz aur 5 gigahertz.
Jab bhi aap internet ko use krte ho tab apka device apki requested information ko binary code mein convert krke router tak bhejta hai, aur fir router ussi binary language mein information ko internet traffic mein bhejta hai aur phir router ko internet ke through hi data receive hota hai, aur ye hi process baar baar repeat hota rehta hai jab tak apke screen pe poora page load nhi ho jata. Ye process around 54Mbps to 1GHz ki speed se hota hai.
History of Wifi invention
Wi-Fi ke invention mein bahut logon ka yogdan hai, isliye kisi ek vyakti ko uska sole inventor kehna na to sahi hai aur na hi fair. Wireless communication aur hardware ke technology se lekar, kai log hain jo Wi-Fi ko aaj ke roop mein banane mein madadgar rahe hain. In sab logon ka yogdan utna hi important hai jitna kisi ek ka.
Victor “Vic” Hayes ko aksar “Father of Wi-Fi” kaha jata hai. Vic IEEE 802.11 Standards Working Group ke chairman the, jo Wireless Local Area Networks ke liye rules aur standards tay karte hain. IEEE ek governing body hai jo decide karti hai ki wireless devices kaise communicate karein aur design kiye jayein.
Lekin Vic ka role sirf ek part hai. Wi-Fi sirf rules aur standards se zyada hai. Ek udaharan ke taur par, actress Hedy Lamarr aur composer George Antheil ne World War 2 ke dauran ek radio guidance system invent kiya tha. Is system ne frequency-hopping technology ka use kiya, jisse radio signals alag-alag frequencies par shift ho sakte the aur radio jamming ko prevent kiya ja sakta tha. Yeh technology Wi-Fi ke development mein madadgar sabit hui, even though yeh Wi-Fi khud nahi thi.
Aur bhi log the jo aise hi projects mein involved the, aur kuch toh isse pehle bhi. 1899 mein, Italian inventor Guglielmo Marconi ne frequency-selective reception ke experiments kiye the taaki radio interference kam ho sake. Nikola Tesla aur kuch aur log bhi frequency-hopping technology ke saath involved the.
1971 mein, University of Hawaii ne radio waves ko computer communication ke liye use karne ka research kiya aur pehli public demonstration ki wireless packet data network ka. Is system ko ALOHAnet kaha gaya, jo ultra-high frequency (UHF) use karta tha aur isse chaar islands par sath-sath seven computers ko connect kiya gaya tha.
Ek dasak baad, US mein regulatory developments ne Wi-Fi networks ke liye use hone wale frequencies ko open kiya.
Early 1990s mein, Australian engineer John O’Sullivan ne radio signal interference ko kam karne ke liye ek technique patent ki, jo aaj bhi modern Wi-Fi implementations mein use hoti hai.
2000 mein, Radiata ne ek 802.11a-compliant chipset introduce kiya jo data transfer ko 54 Mbps tak speed se kar sakta tha. Uske baad se, 802.11 standards ko update kiya gaya, jaise 802.11b/g/n, 802.11ac, aur 802.11ax (Wi-Fi 6).
Toh, Wi-Fi ko develop karne mein kai logon ka yogdan raha hai aur yeh development ab bhi chal rahi hai.
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