sanyukt raajya America mein cigarette kar alag-alag raajyon mein ek doosare se vyaapak roop se bhinn hai. udaaharan ke liye dakshin kairolina mein ek packet par keval 7 seint hai, jo desh ka nyoonatam hai, jabki road aailaind mein America ka uchchatam sitret tax prati packet $ 3.46 hai. Alabama mein, ilinois, misauri, New York shahar, Tennessee aur varjeeniya, kaauntiyon aur shaharon cigarette ki keemat par ek atirikt seemit kar laagoo hain.[87] uchch kar dar ke kaaran new jersey mein cigarette ke ek ausat packet ki keemat $ 6.45 hai,[88][89] jo abhi bhi cigarette ke ek packet ki anumaanit baahya laagat se bhi kam hai.

uttari America ka relarod udyog, RFID aadhaarit ek svachaalit upakaran pehchaan pranaali sanchaalit karta hai. engine aur roling stock do nishkriya RFID taig se lais hote hain (upakaran ke pratyek chhor par ek-ek laga hota hai); pratyek taig par kootit data, upakaranon ke maalik, gaadi sankhya, upakaranon ke prakaar, eksel ki sankhya aadi ki pehchaan karta hai. upakaran maalik aur car ke number ka upayog, ameriki relarod association ke car soochi daataabes se upakaranon ki bhautik visheshataaon ke baare mein adhik jaankaari nikaalne mein kiya ja sakta hai aur relarod ke niji detaabes se maal ke ladaan, mool, gantavya, aadi ki jaankaari praapt ki ja sakti hai.[20]
udaaharan ke liye, kuchh laujik parivaaron mein, NAND gate, nirmaan hone vaale saralatam digital gate hain. anya sabhi laujik waali kaarravaai NAND gate dvaara kaaryaanvit ki ja sakti hain. yadi ek sarkit ko pehle se hi ek NAND gate ki aavashyakta hai aur ek ekal chip aam taur par chaar NAND gate rakhata hai, to baaki ke gate ko anya laujik kaarravaaiyon ko jaise laujikl end laagoo karne ke liye prayog kiya ja sakta hai. yeh, un vibhinn prakaar ke gate se yukt chip ki aavashyakta ko samaapt kar sakta hai.
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.

poorvi uttar ameriki janajaatiyaan vyaapaar ke ek sahaj sveekaar taiyaar mad ke roop mein tambaakoo ke paauch ka badi maatra mein apne paas rakhate hain aur aksar pipe se dhoomrapaan karte hain, chaahe vah paribhaashit samaaroh ho jise pavitra maana jaata hai ya saude ko pakka karne ke liye[17] aur ve ise jeevan ke sabhi charanon sabhi avsaron par peete hain, yahaan tak ki bachapan mein bhi.[18][page needed] aisi maanyata hai ki tambaakoo is jagat ke nirmaata se mila ek ek upahaar tha aur tambaakoo ke kash se nikla dhuaan us vyakti vishesh ke vichaaron aur praarthanaaon ko svarg tak le ja paane mein saksham hai.[19]
pitsabarg mein seint kleyar aspataal ke ek RFID aur baarakod aadhaarit bedasaaid dava satyaapan pranaali laagoo ki hai jo dava trutiyon ko kam kar ke rogi suraksha mein sudhaar karti hai. IV pampon ke maadhyam se di gayi davaaon sahit koi bhi dava dene se pehle, narsein rogi ke ID aur davaaon ki jaanch ke liye ek portebal RFID reedar aur baarakod skainar se yukt ek PDA ka prayog karti hain.[60]
laujik gate ke haaidrolik, vaayaveeya aur yaantrik sanskaran maujood hain aur aisi sthitiyon mein istemaal kiye jaate hain jahaan bijli ka upayog naheen kiya ja sakta. pehle do prakaar ko fludeeks ke tahat maana jaata hai. fludeek laujik ka ek prayog, sainya haardaveyar mein hai jiske ek vidyut chumbakeeya pals mein ujaagar hone ki sambhaavana hai (parmaanu EMP, ya NEMP) jo bijli ke sarkit ko nasht karta hai.
dendaari lekha ek aisa faail ya khaata hai, jismein vyakti ya company dvaara aapoortikrtaaon ko bakaaya, lekin ab tak adatt (karj ka ek roop) paisa hota hai. jab aapko beejak praapt hota hai, to aap use faail se jodte hain aur bhugataan karte samay use hataate hain. is prakaar, A/P rin ka ek aisa svaroop hai, jo aapoortikrta apne khreedaaron ko pesh karte hain, jiske jriye pehle se hi praapt kisi utpaad ya seva ke liye baad mein bhugataan anumat hota hai.
prativedan ke liye engineer digital system ke prakaaron par vichaar karte hain. adhikaansh digital system "sanyojan system" aur "anukramik system" mein vibhaajit ho jaate hain. sanyojan pranaali mein hamesha jo input diya jaata hai vahi aautaput vah deta hai. yeh mool roop se laujik prakriya ke set ka pratinidhitv karta hai aur jiski charcha pehle hi ki ja chuki hai.

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