1980 ke dashak mein kuchh shodhakartaaon ne paaya ki lagbhag sabhi tulyakaalik rajistar-transfer masheenon ko first-in-first-out tulyakaalan laujik ka upayog karke atulyakaalik dijaainon mein parivrtit kiya ja sakta tha. is yojana mein digital machine, ek data pravaah ke ek set ke roop mein pahachaani jaati hai. pravaah ke har kadam mein, ek atulyakaalik "tulyakaalan sarkit" nirdhaarit karta hai jab us step ka aautaput thos aur ek prastut sanket deta hai ki un stejon ko "deta ko pakado" jismein un stejon ke input mein prayog hua hai. iske liye kuchh apekshaakrut saral tulyakaalan sarkit ki aavashyakta hai.
tambaakoo ke sevan ka sabse aam tareeka dhoomrapaan hai aur tambaakoo dhoomrapaan kiya jaane wala sabse aam padaarth hai. krushi utpaad ko aksar doosare yogaj ke saath milaaya jaata hai[8] aur fir sulagaaya jaata hai. parinaamasvaroop bhaap ko saans ke jariye andar kheencha jaata hai fir sakriya padaarth ko fefadon ke maadhyam se koshikaaon se avashoshit kar liya jaata hai.[9] sakriya padaarth tantrika ant mein raasaayanik pratikriyaaon ko shuroo karti hai jisse hrudaya gati, smruti aur satarkata[10] aur pratikriya ki avadhi badh jaati hai.[11] dopaamaain (Dopamine) aur baad mein endorfin(endorphin) ka risaav hota hai jo aksar aanand se jude hue hain.[12] 2000 mein dhoomrapaan ka sevan kuchh 1.22 billion log karte the. purushon mein mahilaaon ki tulana mein dhoomrapaan ki sambhaavana adhik hoti hain[13] tathaapi chhote aayu varg mein is laingik antar mein giraavat aati hai.[14][15] gareebon mein ameeron ki tulana mein aur viksit deshon ke logon mein ameer deshon ki tulana mein dhoomrapaan ki sambhaavana adhik hoti hai.[7]
puraane samay ke dhoomrapaan karne vaale prasiddh vyakti apni chhavi ke ek hisse ke roop mein cigarette ya pipe ka istemaal karte the, jaise jeen paul saartr kigauloise -brand ki cigarette,albart aainsteen,Joseph staalin, dagalas maikaaarthar, bartreind Russel, bing krosbi ki paaipein ya samaachaar prasaaranakartaEdward aar. murro ki cigarette. kuchh khaas lekhak dhoomrapaan ke liye jaane jaate the, udaaharan ke liye dekhein kaurnel professor richrd clean ki kitaab sigrets aar sabalaaim, French saahitya ke is professor ki bhoomika ne baad mein 19 veen aur 20 veen sadi mein dhoomrapaan mein bhoomika nibhaai. lokapriya lekhak kart vonnegut ne apne upanyaason mein cigarette peene ki apni lat ka ullekh kiya hai. Britain ke pradhaanamantri herold Wilson saarvajanik taur par pipe peene ke liye vikhyaat the aur vinstan charchil ko sigaar ke liye jaana jaata hai. sar aarthar kaunan dauyal dvaara racha gaya kaalpanik jaasoos sharlak holmas "apne London ke jeevan ke sust dinon mein jab kuchh naheen ho raha hota tha to apne atyadhik kriyaasheel mastishk ko vyast rakhane ke liye" khud ko kokeen ke injekshan lagaane ke alaava pipe, cigarette aur sigaar peeta tha. DC vertigo kaumik book (haasya pustak) mein elan moor ka paatr John kaanstestaain dhoomrapaan ka paryaaya ban gaya hai, itna ki pehli kahaani ke paraamarsh nirmaata garth inees ne use John kaanstestaain ke fefadon ke Cancer ke aaspaas keindrit kar diya. peshevar pahalavaan James fulingatan ne haalaanki bahut din se dhoomrapaan karne vaalon ko durbhaagya ko aamantrit karne vaale ek charitra "saindamain" (pariyon ki kahaaniyon ka ek bauna, jo bachchon ki aankhon mein ret jhonkakar unhein sone ke liye vivsh kar deta tha) ki sanjnyaa di hai.
pipe dhoomrapaan mein aamtaur par tambaakoo ke dahan ke liye ek chhota sa kaksh (katora) aur ek patali nalika (danda) shaamil hai, jo mukhapatr (thoda) mein samaapt hota hai. tambaakoo ke kase tukadon ko kaksh mein rakha aur prajvalit kar diya jaata hai. pipe mein dhoomrapaan ke liye tambaakoo aksar bahut dhyaan dekar istemaal kiya jaata hai aur svaad ki baareekiyon ki mishrit upalabdhata anya tambaakoo utpaadon mein upalabdh naheen hai.
praarambhik ekeekrut paripth ek aanandadaayak sanyog the. unhein paise bachaane ke liye nirmit naheen kiya gaya tha, balki vajan bachaane ke liye aur Apollo gaaideins computer ko ek antariksh yaan ko ek inarshial gaaideins system ko niyantrit karne ki anumati dene ke liye banaaya gaya tha. pehla ekeekrut paripth laujik gate ki keemat kareeb $50 thi (1960 dollar mein, jab ek engineer $10,000/varsh kamaata tha). sabhi ko aashcharyachakit karte hue, jab sarkit ka thok mein utpaadan hone laga to ve digital laujik nirmaan ki sabse sasti vidhi ban gaye. is praudyogiki mein sudhaar ne laagat mein sabhi baad ke sudhaaron ko prerit kiya.
computer aarkitekchar ek vishesh engineering gatividhi hai jo rajistar, aakalan laujik, bason aur computer ke anya bhaagon ko kuchh prayojan ke liye sabse achhe tareekon se shreneebaddh karne ki koshish karta hai. computer vaastukaar ne laagat kam karne aur gati ko teevr karne aur computer prograaming trutiyon ki pratirksha ke liye computer ke design mein vruhad maatra mein suprayog ko lagaaya hai. aur teji se baitari paavard computer pranaali mein bijli ko kam karna iska saadhaaran uddeshya hai. kai computer aarkeetek maaikroprograamars ke roop mein vistrut prashikshuta ki seva de rahe hain.
Indian Navy claimed that the 300-Watt panels will generate about 5.4 kW solar power system, and avoid around 165 kg of carbon a day, "So in its 25 years life the total carbon saved is around 15 lakhs kg and 5.75 lakh litres of diesel by this innovation" [14][15] Noting that the world is looking for clean, renewable sources of energy in order to protect and reduce the harm caused to the environment, the Navy said the deterioration of the environment is highly correlated to the production and usage of fossil-based fuels worldwide. The Navy said it has created a new mechanism to encourage the utilization and development of renewable energy resources.[16]
ekeekrut paripthon ki vruddhi ke saath, prayukt chips ki nirpeksh sankhya ko kam karne se laagat bachaane ka ek aur tareeka pesh hua. ek designer ka lakshya sirf aasaan sarkit banaana naheen hai, balki ghatak ki ginti kam rakhana hai. kabhi-kabhi yeh antarnihit digital laujik ke sambandh mein thode adhik jatil dijaain mein parint hota hai, lekin fir bhi ghatakon ki sankhya, board aakaar aur yahaan tak ki bijli ki khapat ko kam kar deta hai.

Germany mein dhoomrapaan virodhi samooh aksar sharaab virodhi samoohon ke saath jud gaye,[30] tambaakoo ke sevan ke khilaaf der taibakajejaner Der Tabakgegner (tambaakoo pratidvandvi) patrika mein 1912 aur 1932 mein prakaashit lekh mein pehli baar vakaalat ki gayi. san 1929 mein Germany ke dresaden ke fritj likint ne ek lekh prakaashit kiya jismein fefadon ke Cancer-tobaiko link ka aupachaarik saankhyikeeya saboot tha. edaulf hitlar ne ghanaghor avasaad ke dauraan dhoomrapaan karne ki lat ko paise ki barabaadi kehkar ninda ki thi aur baad mein usane drudh vaktavya diye.[31] yeh aandolan aage chalakar naaji prajanan neeti ke kaaran aur majboot hua jismein mahilaaon ke dhoomrapaan ko ek jarman parivaar mein patniyon aur maataaon ke liye anupayukt maana gaya.[32]
saare pareekshan ke baad, deta bits jagah par hain, dijaain ko "saamaanya mod" ke liye reekanfigr kiya jaata hai aur ek ya ek se adhik klauk pals ko laagoo kiya jaata hain, taaki dosh ka pata lag sake (jaise stak-ait lo ya stak-ait haai) aur pareekshan ke parinaam ka pragrahan scan shift rajistar mein flip-flop mein aur/ya leches mein kiya jaata hai. ant mein, pareekshan ke parinaam ko block seema mein sthaanaantarit kar diya jaata hai aur poorvaanumaan "gud machine" nateeje ke prati tulana ki jaati hai.
tambaakoo dhoomrapaan ek aisa abhyaas hai jismein tambaakoo ko jalaaya jaata hai aur usaka dhuaan ya to chakha jaata hai ya fir use saans mein kheencha jaata hai. iska chalan 5000-3000 E.poo.ke praarambhik kaal mein shuroo hua.[1] kai sabhyataaon mein dhaarmik anushthaanon ke dauraan ise sugandh ke taur par jalaaya gaya, jise baad mein aanand praapt karne ke liye ya fir ek saamaajik upakaran ke roop mein apnaaya gaya.[2] puraani duniya mein tambaakoo 1500 ke dashak ke antim daur mein prachalit hua jahaan isne saajha vyaapaarik maarg ka anusaran kiya. haalaanki yeh padaarth aksar aalochna ka shikaar banta raha hai, lekin iske baavajood vah lokapriya ho gaya.[3] jarman vaigyaaniko ne aupachaarik roop se der se 1920 ke dashak ke ant mein dhoomrapaan aur fefade ke Cancer ke beech ke sambandhon ki pehchaan ki jisse aadhunik itihaas mein pehle dhoomrapaan virodhi abhiyaan ki shuruaat hui. aandolan tathaapi dviteeya vishv yuddh ke dauraan dushmanon ki seema mein pahunchane mein naakaam raha aur uske baad jald hi alokapriya ho gaya.[4] 1950 mein svaasthya adhikaariyon ne fir se dhoomrapaan aur Cancer ke beech ke sambandh par charcha shuroo ki.[5] vaigyaanik pramaan 1980 ke dashak mein praapt hue, jisne is abhyaas ke khilaaf raajaneetik kaarravaai par jor diya. 1965 se viksit deshon mein khapat ya to ksheen hui ya fir usamein giraavat aayi.[6] haalaanki, vikaasasheel duniya mein badhat jaari hai.[7]

1980 ke dashak mein mile vaigyaanik pramaan ke anusaar tambaakoo companiyaan ne daava kiya hai ki laaparavaahi baratne ka kaaran svaasthya par padne vaale pratikool prabhaav se pehle unka anajaan hona tha ya paryaapt vishvasaneeyata ka abhaav tha. svaasthya adhikaariyon ne 1998 tak in daavon ka saath diya jiske baad unhonne apni sthiti ulat di. tambaakoo pradhaan niptaan samjhauta (the tobaiko master saitalameint egreemeint) mool roop se chaar sabse badi tambaakoo companiyon aur 46 raajyon ke ameriki etorni general ke beech hua. tambaakoo ke kuchh khaas prakaar ke vijnyaaapanon par pratibandh laga diya gaya aur svaasthya muaavaje ke taur par bhugataan ko aavashyak kar diya gaya, jo baad mein sanyukt raajya America ke itihaas mein sabse bade naagrik niptaan ke roop saamane aaya.[36]

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