"sviching gati" yeh bataati hai ki ek inavartar prati sekand kitni baar troo se faals aur vaapas mein badal sakta hai ("laujikl naheen" prakriya ki ek electronic prastuti). tej laujik kam samay mein adhik kaarya ko poora kar sakte hain. digital laujik pehli baar tab upayogi ban gaye jab svichn gati pachaas hartj se oopar ho gayi, kyonki vah yaantrik kailakuletar ka sanchaalan kar rahe manushyon ke ek dal se tej thi. aadhunik electronic digital laujik niyamit roop se paanch geegaahartj (5 × 109 hartj) par parivrtit hote hain aur kuchh prayogashaala pranaali ek teraahartj (1 × 1012 hartj) se adhik par parivrtit hoti hai.
yadi kisi taig yukt vastu ka bhugataan kredit card ya ek lauyalti card ke upayog ke saath sanyojan ke roop mein kiya jaata hai, to paroksh roop se us vastu ki duniya bhar mein adviteeya ID (RFID taig mein samaahit) ko padh kar kreta ki pehchaan ko nikaalna sambhav ho jaaega. aisa tabhi sambhav hai jab dekhne vaale vyakti ke paas agar lauyalti card deta aur kredit card data tak abhigm bhi ho aur upakaran wala vyakti yeh jaanta ho ki aap kahaan jaane vaale hain.
America mein khaadya evam aushadhi prashaasan ne maanavon mein RFID chip ke prayog ko manjoori di hai.[80] kuchh vyaavasaayik pratishthaan, graahakon ko seva ke bhugataan ke liye ek RFID-aadhaarit taib ke upayog ka vikalp dete hain, jaise Barcelona mein baaja beech night club.[81] isse ek vyakti ki gopaneeyata sambandhit chintaaen badh gayi hain choonki ve jahaan bhi ve jaayeinge unhein unke ek adviteeya pahachaanakarta dvaara sambhaavit roop se track kiya ja sakta hai. chintaaen vyaapt hain ki ek adhinaayakavaadi sarkaar dvaara iska durupayog kiya ja sakta hai ya svatantrata ko hataane mein falit ho sakta hai.[82]
gharelu svaasthya dhokhaadhadi ka mukaabala karne ke liye, Medicare end Medicaid sarvises ne haal hi mein gharelu svaasthya dekhbhaal udyog ki jaanch karne ki ghoshana ki. March 2009 mein, New York mein ek tikaaoo chikitsa upakaran aapoortikrta, eleet medical saplaai, chikitsa dhokhaadhadi se ladne ke liye hastaakshar karne vaalon mein pratham tha. unhonne is prakriya ko aage badhaane ke liye CYBRA ke EdgeMagic RFID aur baar code software ka chayan kiya. [11]

anukramik system iske atirikt do upashreniyon mein vibhaajit hota hai. jab ek "klauk" signal state ko parivrtit karta hai tab "tulyakaalik" anukramik pranaali ek hi baar mein state ko badal deta hai. jab bhi input badalate hain "atulyakaalik" anukramik pranaali parivartan ko prasaarit karta hai. tulyakaalik anukramik system atulyakaalik sarkit ki visheshata se bana hota hai jaise flip flop, jo klauk jab parivartan karta hai tabhi ye parivartan karta hai aur jismein timing margin ko dhyaan se design kiya jaata hai.
anukramik system iske atirikt do upashreniyon mein vibhaajit hota hai. jab ek "klauk" signal state ko parivrtit karta hai tab "tulyakaalik" anukramik pranaali ek hi baar mein state ko badal deta hai. jab bhi input badalate hain "atulyakaalik" anukramik pranaali parivartan ko prasaarit karta hai. tulyakaalik anukramik system atulyakaalik sarkit ki visheshata se bana hota hai jaise flip flop, jo klauk jab parivartan karta hai tabhi ye parivartan karta hai aur jismein timing margin ko dhyaan se design kiya jaata hai.
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.
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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