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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.
Write the values of the C output for the following gates: For a(n) ________ gate, the output is zero if any of the inputs are equal to one. For a(n) ________ gate ,the
What are benefits of having densely packed Integrated Circuits? These are stated below: Reliability: The integrated circuit interconnections are in fact more reliable
Question: a) Evary cell in a cellular network is assigned a band of frequencies. The allocated frequencies are divided into two types of channels. Indentify and describe each t
What is refactoring? Refactoring is explained as the changes to the internal structure of software to improve its design without changing its external functionality. It is an e
How do transmission bridges help in satisfying the connectivity? A usual transmission bridge is demonstrated in figure. The series capacitance and the shunt inductances of
How is Secure Sockets Layer relied on the certificates? The Secure Sockets Layer standard is not a single protocol, but quite a set of accepted data transfer routines which a
Determine the block diagram of bcd adder To add 0110 to binary sum, we use a second 4-bit binary adder. The two decimal digits, together with input-carry, are first added in to
Prepare at least 3 sets of input data (Test data) along with expected output for testing your program.
Write 8086 initialisation routine required to program 8255 for mode 1 with Port A and Port B as output Ports and Port C as an input port. Indicate all the relevant signals.
Advantages offered by Data Mining: 1. Facilitates discovery of knowledge from big, massive data sets. 2. Can be used within dissimilar application areas by Fraud detection
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