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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.
The variable that are declared outside all the functions are called The variables that are declared outside every functions are known as global variable.
External Interrupt: Interrupt signal came from input-output devices connected external to processor. These interrupts depend on external conditions that are independent of the
Generally the Instruction Set Architecture (ISA) of a processor can be distinguished using five categories: Operand Storage in the CPU - Where are the operands kept other t
http://www.cse.psu.edu/~dheller/cmpen331/Homework/Homework4.htmlwords accepted#
Q. Show the steps of execution of instructions? Fetch First Instruction into CPU: Step 1: Find/calculate the address of first instruction in memory. In this machine illust
Thread is a least unit of process. In process have one or more thread.
how to reduce risc pipelining structure
a) What command do you use to file all active and available sockets? These should also contain UNIX domain sockets, which are primarily used for local connections. b) What sta
What is the fundamental difference between the transactions made using Smart Card and E-cash? Smart Card and E-Cash: E-cash storable smart cards can dispense and store ca
Explain software process model in brief.
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