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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.
Explain Recursive Descent Parsing It is a top down parsing with no backtracking. This parsing method uses a set of recursive processes to perform parsing. Most important advant
HOW TO SAVE YOUR FILE? Step 1: Click on FILE Step 2: Click on SAVE Step 3: Choose the folder in which you want to save Step 4: Provide a name to the file (with .htm /
calculate the number of states per unit volume in an energy interval of 0.01eV above the Fermi energy of Na metal. The Fermi energy of Na at 0 K=3eV.
Explain about the Voice recognition device Blind and partially-sighted people can communicate with a computer using microphone and software (keyboard and touch screens can't be
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What is the protocol used by SAP Gateway process? The SAP Gateway method communicates with the clients based on the TCP/IP Protocol.
What is ROM? Read only memory [ROM] is used for storing programs that are permanently resident in the computer and for tables of constants that do not change in value as the pr
CISC (Complex Instruction Set Computer) CISC stands for Complex Instruction Set Computer. If the control unit having a number of micro-electronic circuitry to make a set of con
Q. What is Stack and register manipulation? Stack and register manipulation: If we create stacks, stack instructions prove to be useful. LOAD IMMEDIATE is a good illustration
Q. Use of Intrinsic Functions in FORTRAN? HPF initiates some new intrinsic functions also to those defined in F90. The two mainly often used in parallel programming are system
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