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DVD-ROM employs same principle as a CD-ROM for reading and writing. However a smaller wavelength laser beam is used. Total capacity of DVD-ROM is 8.5GB. In double-sided DVD-ROM two these disks are stuck back to back that allows recording on both sides. This requires disk to be reversed to read reverse side. With both side recording and with each side storing 8.5GB total capacity is 17GB.
In both DVD-ROMs and CD-ROMs the density of data stored is constant throughout spiral track. In order to attain a constant readout rate the disk should rotate faster near centre and slower at outer tracks to maintain a constant linear velocity (CLV) between head and CD-ROM/DVD-ROM platter. So CLV disks are rotated at variable speed. Compare it with mechanism of constant angular velocity (CAV) in which disk is rotated at a constant speed. So in CAV the density of information storage on outside sectors is low.
What is Fork swap? "Fork ()" is a system call to make a child process. When the parent process calls "fork()" system call, the child process is formed and if there is short of
Spirit Duplicating Equipment Required Spirit Duplicator (also known as hectograph) Thermal copier (optional) Materials Masters Hectographic carbon COPY pa
Links and Association Links and associations are the basic means used for establishing relationships among objects and classes of the system. In the next subsection we will di
What is commitment unit? When out-of-order execution is permitted, a special control unit is required to guarantee in-order commitment. This is known as the commitment unit. It
Write a procedure which divides a 32-bit number by a 16-bit number. The procedure must be general which is it's defined in one module and can be called from another assembly module
Q. What do you mean by Interrupts? The term interrupt is an exceptional event which causes CPU to temporarily transfer its control from presently executing program to a separat
Q. Show the spawned program? include "pvm3.h" main() { int ptid, msgtag; char buf[100]; ptid = pvm_parent(); strcpy(buf, "hello, world from ");
They are light weight components that do no painting, but can take space in the GUI. This is mainly used for layout management.
Hazard in pipeline - computer architecture: A hazard in pipeline .-removing a hazard frequently need that some instructions in the pipeline to be permitted to proceed as othe
Q. Explain about Double Error Detection bit? Let's presume now that two bit errors take place in data. Data received: So on -matching we conclude P3-D3 pair doesn't
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