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Q. Illustrate about Compact Disk Rewritable?
CD-RW optical disk can be repeatedly written and overwritten same as with a magnetic disk. Even though a number of techniques have been tried but only pure optical approach which has proved attractive is known as phase change. Phase change disk uses a material which has two considerably different reflectivities in two different phase states. There is an amorphous state in that molecules display a random orientation and that reflects light poorly and a crystalline state that has a smooth surface which reflects light well. A beam of laser light can alter the material from one phase to other. Primary shortcoming of phase change optical disks is that material ultimately and permanently loses its desirable properties. Current materials are able to be used for between 500000 and 1000000 erase cycles.
CDRW has obvious benefit over CD-ROM and CD-R that it is able to be rewritten and so used as a true secondary storage. As it competes with magnetic disk. A key benefit of optical disk is that engineering tolerances for optical disks are much less severe than for high-capacity magnetic disks. So they exhibit higher reliability and longer life.
What are the special features of Direct RDRAM? It is a two channel Rambus It has 18 data lines intended to transfer two bytes of data at a time There are no divide
Q. Can a vector have a component equivalent to zero and still have a nonzero magnitude? Answer:- Yes For example the 2-dimensional vector (1, 0) has length sqrt (1+0) = 1
electro chemical series and its applications
What tag do you use to add a hyperlink column to the DataGrid? Anchor tag is used to add a hyperlink column to the data grid
What is generalization? Generalization is a relationship among a class (super class) and one or more variations of the class (sub classes).It arrange classes by similarities an
Clocked SR flip flop A clock pulse is a sequence of logic 0, logic 1, and logic 0 occuring on the CLK input. Time t n occurs before the clock pulse and time t n+1
In binary counter the flip flop of lowest order position is complemented with each pulse. This means that JK input position must be maintained with logic one
Discuss the classifications of switching systems. The categorizations of switching systems are specified in the block diagram given below:
create a BCD adder combinational ckt. that adds 2 digit BCD inputs
As in PRAM there was not any direct communication medium between processors so a different model called as interconnection networks have been considered. In the interconnection net
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