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Q. What is Compact Disk Recordable?
To accommodate applications in which just one or a small number of copies of a set data is required write-once read-many CD called as CD Recordable (CD-R) has been developed. For CD-R a disk is prepared in such a manner that it can be later written once with a laser beam of modest intensity. Therefore with a somewhat more costly disk controller than for CD-ROM customer can write once and read the disk.
CD-R medium is similar to however not identical to that of a CD or CD-ROM. For CDs and CD-ROMs information is recorded by pitting of surface of medium that changes reflectivity. For a CD-R medium contains a dye layer. Resulting disk can be read on a CD-ROM drive or a CD-R drive.
CD-R optical disk is attractive for archival storage of files and documents. It offers a permanent record of large volumes of user data.
Q. Illustrate Header section of a device driver? Header comprises information which allows DOS to identify the driver. It also comprises pointers which allow it to chain to ot
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In general what are the two ways in which one can retrieve data from tables? Using Select statements, Database Program.
What are preprocessor directives? Preprocessor directives: These are the commands given to a program called as pre-processor that processes the source code before it passes by
Q. Perform on occurrence of an interrupt? Determining these requirements let's work out steps that CPU should perform on occurrence of an interrupt. The CPU should find
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An off-hook signal will repeat for a/an duration. For a/an finite duration, an off-hook signal will repeat.
What are null values? If the value of a field in a table is indeterminate or unknown, it is known as a null value.
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