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There are various limitations of primary memory like limited capacity which is its not enough to store a very large volume of data and volatility which is when power is turned off data stored is lost. So Secondary storage system should provide large storage capacities, low cost per bit as well as medium access times. Magnetic media have been used for these purposes for a long time. Current magnetic data storage devices take form of floppy disks in addition hard disks and are used as secondary storage devices. However audio and video media either in compressed form or uncompressed form need higher storage capacity than other media forms and storage cost for these kinds of media is considerably higher.
Optical storage devices provide a higher storage density at a lower cost. CD-ROM can be used as optical storage device. Many software companies provide both operating system and application software on CD-ROM today. This technology has been main catalyst for development of multimedia in computing since it is used in multimedia external devices like video recorders and digital recorders (Digital Audio Tape) that can be used for multimedia systems.
Removable disk, tape cartridges are other forms of secondary storage devices are used for back-up purposes having higher storage density and higher transfer rate.
Question 1: You want to perform the task of setting an alarm on your mobile phone. You can assume that the alarm option is accessible from the main menu of your phone. (a) P
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In a word,you can't. It would certainly be helpful to be able to color-code your worksheet tabs. For some reason, Microsoft hasn't executed this feature, which has been available i
pipelining hazards
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Evaluate x = A ‾.B + C ( ) using the convention A = True and B = False. Ans. Simplify given expression x = A ‾ .B + C ( ) as = A ‾ B + C (A ‾ + D ‾ ) (As = A ‾ +D ‾ usin
What are the characteristics of the E-Cash? These kinds of payments, turning the Internet within a transaction oriented forum, need mediums which are easy and cheap (through a
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How many lines of address bus must be used to access 2048 bytes of memory when available RAM chips 128 × 8. How many lines of these will be common to each chip? Ans. AS chips
What is NEG instruction Arithmetic sign inversion or two's complement (NEG). NEG instruction two's complements a number which means that arithmetic sign of a signed number cha
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