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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.
Home Banking: E-commerce is used in Home Banking as single call or single click. Online banking (Internet banking) is a term used for performing transactions, payments etc. ove
Fundamentals of IT 1. Explain the Impact of Information Technology on governments and educational organizations. 2. Explain application and system software. 3. Briefly ex
What is electronic cash? E-cash is cash that is demonstrated by two models. One is on-line type of e-cash that allows for the completion of all kinds of internet transactions.
What do you understand by Hit ratio? When a processor refers a data item from a cache, if the referenced item is in the cache, then such a reference is called hit. If the refer
What are SPA/GPA parameters (SAP memory) SPA/GPA parameters are field values saved globally in memory. There are two ways to use SPA/GPA parmeters: By setting field attrib
Steps in Building the Structure Chart 1. Recognize top level modules and decompose them into lower levels 2. Add control connections 3. Add couples 4. Review and revis
How to increase simulation speed First figure out what is eating away your CPU cycles. Is it 1. Compile time - Use a Make file to compile only files with changes and not
What is called PCP? The phenomenon of un-decidability is not confined to problems concerning automata. An un-decidable problem concerning on simple manipulation of strings is k
Find how many bits of ADC are required to get an resolution of 0.5 mV if the maximum full scale voltage is 10 V Ans. Given Resolution=.5mV Full scale output=+10v %resolut
Multi-Layer Network Architectures - Artificial intelligence: Perceptrons have restricted scope in the type of concepts they may learn - they may just learn linearly separable f
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