Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. What is Compact Disk ROM?
Both audio CD and CD-ROM (compact disk read-only memory) share similar technology. Main difference is that CD-ROM players are more rugged and have error correction devices to ensure that data are appropriately transferred from disk to computer. Both types of disk are made the same way. Disk is created from a resin like polycarbonate. Digitally recorded information (either music or computer data) is imprinted as a sequence of microscopic pits on surface of polycarbonate. After that Pitted surface is coated with a highly reflective surface frequently aluminium. Shiny surface is protected against scratches and dust by a topcoat of clear acrylic. Lastly a label can be silk-screened on acrylic.
Figure: The CD Surface and Operation
Information is retrieved from a CD or CD-ROM by a low-powered laser housed in an optical-disk player or a drive unit. The laser shines via clear polycarbonate whereas a motor spins disk past it (Figure above). Intensity of reflected light of laser alters as it encounters a pit. Specially if laser beam falls on a pit light scatters and a low intensity is reflected back to source. Areas between pits are termed as lands. A land is a flat surface that reflects back at a higher intensity. Change between lands and pits is detected by photo sensor and converted in a digital signal. Sensor tests surface at regular intervals. Beginning or end of a pit signifies a 1 when no change in elevation takes place between intervals then a 0 is recorded. Data on CD-ROM are arranged like sequence of blocks.
What is pipelining? The overlapping of implementation of successive instructions is known as pipelining.
What are the entities that are swapped out of the main memory while swapping the process out of the main memory? All memory space occupied by the process, process's u-area, and
Q. Explain Functional Roles of Information System? Functional Roles of Information System 1 Lower Costs - a) Use IT to significantly reduce the cost of business proce
Q. Explain High performance of Instruction execution? High performance of Instruction execution: While mapping of HLL to machine instruction the compiler favours relatively sim
IS strategy - Information System As an operations manager when attempting to navigate your organisation through the information landscape and make best use of the available sy
Determine Symbolic names can be associated with Symbolic names can be associated with the data or instruction
how to create balanced tree in matlab
1) Discuss various types of persuasive communication you might be needed to write or present in your professional and personal life. 2) Describe two ways to organize a resume
Yet another type of input is HIDDEN input. A HIDDEN input is a value/name pair which is returned to you but doesn
Interconnection Network Introduction This unit discusses the types and properties of interconnection networks. In multiprocessor systems, there are multiple I/O modules
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd