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In a memory hierarchy system, data and programs are first stored in secondary or auxiliary memory. Program and its related data are brought in main memory for execution. What if the size of Memory needed for Program is more than the size of memory? Virtual memory is a idea used in some large computer systems which allow user to construct programs as though a large memory space were available, equal to total of secondary memory. Every address produced by CPU goes through an address mapping from so-called virtual address to a physical address in main memory. Virtual memory is employed to give programmers the illusion that they have a very large memory at their disposal although computer in fact has a relatively small main memory. A Virtual memory system offers a mechanism for translating program-generated addresses in correct main memory locations. This is done dynamically whereas programs are being executed in CPU. The translation or mapping is handled automatically by hardware through a mapping table.
A Applet is a java program that runs within a web browser.
What is co-operative process? A process is co-operating if it can affect or be affected by the other processes implementing in the system. Any process that share data with othe
Write down different system calls for performing different kinds of tasks. The major types of system calls are given as: Process Control: These kinds of system calls are
The history file, history.txt, is the branch history of a run of the gcc compiler (the first field is the address of the branch instruction, the second field is the target branch a
Why WAP gateways are used? The Wireless Application Protocol Gateway is a very unique product giving semi -automatic redirection of HTML documents to WAP compatible mobile phon
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State Disadvantages of object oriented analysis design You know that OO methods only create functional models within objects. There is no place in methodology to design a compl
The do while Loop This is very similar to the while loop except that the test occurs at the end of the loop body. This guarantees that the loop is executed at least once before
Q. Explain about Zip Drive? Zip Drive: Loads of files, Volumes of data have definitely increased onus on today's computer user and protection of this data is what bugs every
what are the different techniques of biasing a transistor?
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