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Q1 Marks = 15

Assume that three I/O devices are connected to a 16-bit, 100 MIPS CPU. The first device is a hard drive with a maximum transfer rate of 2MB/sec. It has a half word (16-bit) bus. The second device is a floppy drive with a transfer rate of 10KB/sec over 8-bit bus, and the third device is a keyboard that must be polled 25 times per second. Assuming that the polling operation requires 40 instructions for each I/O device, determine the percentage of CPU time required to poll each device and also state what you infer after calculating these percentages.

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Replies to This Discussion

plz mjy kch samjh  ni aa ri ........... koe solution mail kr dy ......... 

U are right Akram bhai calculator % function confused me

plzzzz upload the solution

ok yaro ab me word me upload kerta hun be patient for only 12 minutes.

my email is 


but iss se kea ho ga ap yahen discuss ker len. ha ha ha.jsut joke.

vu k shaheeno: just simple calculation.

Logo tyare kar lo inqlab anay wala hai. ye Imran khan ya Nawaz shareef ya koe aur syase party nae lay ge, ye 2, 3 years me khud ap logo ko pta chal jay ga. waqt anay wala hai. allah se tuba jaldi kar lo, thanks

oho bhai drao to mat.saf aur sedhi baat kro na

me dra nae ra ap ko aitmad de ra ho, ye bht bare qaum hai. bht jald logo ko pta chal jay ga, k ALLAH k darwaish kahan se a gay hain. believe me. Thanks

lo g file word me but please avoid just copy and create your own files.

pray for me too.



Allah ap ko aur hamain naik bnay, ameen

yar i think now there is nothing left to discuss about this assignment so please just submit and if there is any confusion you can ask still because now we should all get full marks which was my mission..........

Thanks dear--------------------- Ameen

Thats great  akram ul haq


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