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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.
Give the decription of user case A use case is a description of the set of the sequence of actions which a system performs to produce an observable result which is of a value t
What is control store? The microroutines for all the instructions in the instruction set of a computer are kept in a special memory known as the control store.
In binary representation there are some states that are believed to be never occurred because of some particular functionality of a given circuit. If zero output is assigned to suc
Q. Program for interchanging the values of two Memory locations? Program for interchanging the values of two Memory locations ; input: Two memory variables of same size:
Explain path testing. Path Testing: Testing in which all paths in the program source code are tested at least once. Path testing has been one of the first test methods, and e
An accessor is a class operation that does not change the state of an object in C++. The access or functions require to be declared as const operations
desing mode level counter starting at 0011 using D flipflop
State the SELECTIVE CLEAR - logic micro operations The selective-clear operation clears to 0 bits in register A only where there are corresponding 1's in the register B. For
Write a GUI/MP3 program called MP3Random that reads all MP3 les in a directory and plays them in random order. The GUI should have a little window with: 1. A button Next that s
In applications where the required memory capacity cannot be satisfied by a single available memory IC chip, what should the designer do to meet this requirement? Ans: If th
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