2002 mein rog niyantran aur rokathaam kendra ne kaha ki sanyukt raajya America mein beche gaye cigarette ke ek packet par dhoomrapaan karne vaalon ki chikitsa aur utpaadakata mein kshati ke roop mein desh ke 7 $ (dollar) se adhik kharch hote hain, jo prativrsh dhoomrapaan karne vaale prati vyakti par prativrsh $ 2000 se adhik baithata hai.[70] svaasthya arthashaastriyon ke ek dal ne ek anya adhyayan mein paaya ki unke parivaaron aur samaaj dvaara sanyukt pradatt moolya cigarette ke prati packet par 41 dollar hai.[83]
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.
kuchh pranaaliyon mein yadi digital deta ka ek bhaag lupt ho jaae ya galat tareeke se vyavahrut hon, to sambandhit deta ke vishaal khandon ka arth poori tarah se badal sakta hai. kyonki kleef ifekt ke kaaran, upayogakartaaon ke liye bataana mushkil hai ki koi vishisht system vifalta ke kagaar par sahi tha ya fir vah asafal hone se pehle bahut adhik shor ko sahan kar sakta hai ya naheen.
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