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.
RFID traansapondar chips ko golf geind mein pratyaaropit kiya gaya hai jisse unhein track kiya ja sake. aise traiking ka upayog homing upakaran ka upayog kar, khoi hui geind ko khojane mein aur kampyootareekrut driving range praaroop mein kiya ja sakta hai jo ek khilaadi dvaara maare gaye shot ko track karta hai aur doori aur sateekata par pratikriya deta hai.
dendaari lekhon mein, ek saadhaaran glati se adhik bhugataan ho sakta hai. ek saamaanya udaaharan mein dupleeket beejak shaamil hain. ek beejak asthaai roop se glat jagah rakha ja sakta hai ya abhi bhi anumodan star par ho sakti hai, jab vikreta uske bhugataan ki sthiti maaloom karne ke liye sampark karta hai. A/P staaf sadasya chhaan-been karta hai aur paata hai ki usaka bhugataan abhi naheen hua hai, to vikreta dupleeket beejak bhejata hai; is beech mool beejak ka pata chalta hai aur usaka bhugataan ho jaata hai. uske baad dupleeket beejak aata hai aur anajaane mein usaka bhi bhugataan ho jaata hai, shaayad kisi alag beejak sankhya ke adheen.
New York shahar mahanagar parivhan praadhikran ne ek RFID pareekshan kiya jismein maastarakaard dvaara pepaas ka upayog kiya gaya. yeh pareekshan mukhya roop se IRT leksingatan evenyoo line par kiya gaya jismein anya laainon ke kai vyast station bhi shaamil the. yeh pareekshan 31 May 2009 ko samaapt hua, lekin pepaas ke upayog ke vikalp ko vyaapak paimaane par baad ki taareekh mein pun: shuroo kiya ja sakta hai. MTA, New York shahar ke sabave aur bason par kiraaya bhugataan ke liye smaartalink (PATH dvaara shuroo) ko sveekaar karne aur antat: metrokaard ke ek pratisthaapan ke roop mein chalaane ki sambhaavana ka adhyayan kar raha hai.
jis tarah se main ise dekhata hoon, vahaan 2017 mein ham saat pramukh takaneek pravrttiyon kee dukaan mein hain. yadi aap ek sektar mein najar rakh rahe hain jisamen koee vyavasaay shuroo karane ke lie, inamen se koee ek bahut achchha shart hai yadi aap pahale se hee ek udyamee hain, to is baare mein sochen ki aap apane lakshit darshakon tak nae tareeke se pahunchane ke lie in praudyogikiyon ka laabh kaise utha sakate hain.

Britain mein, RFID praudyogiki ka upayog karke, saarvajanik parivhan ke aseemit prayog ke liye poorv bhugataan ki sanchaalan pranaali ko taiyaar kiya ja raha hai. yeh design kreditkaard sadrush paas mein antarnihit hai, jise jab scan kiya jaata hai to paas ke vaidh hone ka vivran aur us paas ke vaidh hone ke dinon ka pata chalta hai. pehli baar ise laagoo karne waali company nautingham shahar ki NCT company hai, jahaan aam janta pyaar se ise "beep card" kehti hai. iske baad ise safalataapoorvak London mein laagoo kiya gaya, jahaan "oyastar card" pe-aij-you-go yaatra ki anumati deta hai saath hi saath vibhinn samayaavadhi aur vibhinn kshetron ke liye maanya paas ki bhi anumati hai.


↑ Null, Linda; Lobur, Julia (2006). The essentials of computer organization and architecture. Jones & Bartlett Publishers. pa॰ 121. aai॰aऍsa॰abee॰aऍna॰ 0763737696. http://books.google.com/books?id=QGPHA19GE-IC&pg=PA121&dq=digital++circuits+and+Boolean+logic#v=onepage&q=digital%20%20circuits%20and%20Boolean%20logic&f=false. "We can build logic diagrams (which in turn lead to digital circuits) for any Boolean expression..."
jin deshon mein ek saarvajanik svaasthya pranaali hai, vahaan dhoomrapaan karne vaale beemaar logon ki samaajik chikitsa dekhbhaal ki laagat karon mein vruddhi ke maadhyam se vahan ki jaati hai. is morche par do tark maujood hain, "dhoomrapaan samarthakon" ka tark hai ki bhaari dhoomrapaan karne vaale aam taur par lamba jeevan naheen jeete jisse budhaape ko prabhaavit karne waali kharcheeli aur puraani beemaari naheen hoti aur yeh samaaj mein svaasthya seva ke bojh ko kam karta hai. "dhoomrapaan virodhi" tark ke anusaar svaasthya chikitsa ka bojh badhta hai kyonki dhoomrapaan karne vaalon ki saamaanya aabaadi ki tulana mein kam umr mein lambi beemaari dar adhik hai.
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.

RFID traansapondar chips ko golf geind mein pratyaaropit kiya gaya hai jisse unhein track kiya ja sake. aise traiking ka upayog homing upakaran ka upayog kar, khoi hui geind ko khojane mein aur kampyootareekrut driving range praaroop mein kiya ja sakta hai jo ek khilaadi dvaara maare gaye shot ko track karta hai aur doori aur sateekata par pratikriya deta hai.
kreteks ek cigarette hai jo tambaakoo, laung aur ek svaadisht chatani ke ek jatil mishran ke masaale se bani hai. yeh pehli baar kudus, jaava mein 1880 ke dashak mein pesh ki gayi, jo fefadon ko laung ke aushadheeya yugenol (eugenol) dene ke liye banaayi gayi thi. tambaakoo ki gunavatta aur vividhta ne kretek ke utpaadan mein mahatvapoorn bhoomika ada ki kyonki kretek mein 30 se adhik prakaar ke tambaakoo sammilit ho sakte hain. laung ki kaliyon ke kiye gaye chhote-chhote tukado mein tambaakoo ka 1/3 vajan ka mishran uske svaad ko badhaata hai. sanyukt raajya America ke kai raajyon mein kreteks par pratibandh hai[krupaya uddharan jodein] aur sanyukt raajya America mein 2004 mein tambaakoo aur menthaul ke alaava anya masaalon ka "vishesh svaad" hone ke kaaran kreteks ko cigarette mein vargeekrut na kar use nishiddh kar diya gaya.[44]
soochana ka bhandaaran enaalaug ki tulana mein digital pranaali mein aasaani se kar sakte hain. digital system ka shor pratirksha vightan ke bina deta ko sangraheet aur pun: praapt karne ki anumati deta hai. ek enaalaug system mein, puraane aur chheejan se shor sangruheet soochana ko nasht karta hai. ek digital pranaali mein jab tak kul shoragul ek nishchit star se neeche hai, jaankaari ko poori tarah se pun: praapt kiya ja sakta hai.
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.
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