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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.
Q. Standards used for development of a system? Documentation standards: It must be an ongoing activity at the time of system development life cycle. Quality Standards:
Message passing is possible the most widely used parallel programming paradigm these days. It is the most portable, natural and efficient scheme for distributed memory systems. It
State the advantages Off-the-shelf - tends to be less expensive as development costs can be spread over many users - can be more sophisticated as large sales bring in c
The micro-instruction cycle can comprises two basic cycles: the fetch and execute. Here in the fetch cycle address of micro-instruction is produced and this micro-instruction is pu
How the at-user command serves mainly in lists? The AT USER-COMMAND event serves mostly to handle own function codes. In this case, you should make an individual interface wit
Q. Explain Assembly program execution? An assembly program is written according to a strict set of rules. A word processor or editor is used for keying an assembly program in t
Conversion of Decimal number 82.67 to its Binary Equivalent Ans. Firstly see the integer part 82 and determine its binary equivalent as The Binary equivalent is (101001
Determine the uses of Programming Language Interface PLI is used for implementing system calls that would have been hard to do otherwise (or impossible) using Ve
How is multidimensional arrays defined in terms of an array of pointer? An element in a multidimensional array like two-dimensional array can be shown by pointer expression as
What is a pipeline hazard? Any condition that causes the pipeline to stall is known as hazard. They are also known as stalls or bubbles.
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