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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.
What are the characteristics of digital ICs used to compute their performance? Ans: Characteristics of Digital Integrated Circuits 1. Speed of operation: The Speed o
how CSMA protocol is improved through persistence methods & collition detection
Q. Illustrate working of rubber dome keyboards? Rubber Dome: In rubber dome keyboards both positioning and contact are controlled by a puckered sheet of elastomer that is a s
What are the process states in Unix? As a process implements it changes state according to its circumstances. Unix processes have the following states: Running : The process
Specifying the Problem: Now next here furtherly we now use to look at how you mentally constructed your decision tree where deciding what to do at the weekend. But if one way
List the typical functions of operating systems. Classical functions of operating system are given as: (1) Process management: A process is a program throughout execution.
A real time system is a computer system that updates the information at the similar rate it receives it. Real time system is of two types:- a) Hard real time system and
The Extensible Firmware Interface (EFI) is a specification that defines a software interface among an operating system and platform firmware. EFI is intended as a significantly imp
Basic Software: The basic software is also referred to as utilities. Basic software packages are available for performing operations such as data entry and validation, sorting
What is the disadvantage of strobe method. The drawbacks of strobe method are that the source unit that show the transfer has no way of knowing whether the destination unit h
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