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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.
Define asynchronous bus. Asynchronous buses are the ones in which every item being transferred is accompanied by a control signal that shows its presence to the destination uni
What is the difference between char a[] = "string"; and char *p = "string";? Ans) In the first case 6 bytes are assigned to the variable a which is fixed, where as in the secon
CGI and JAVA are fundamentally dissimilar, and for most applications are NOT interchangable. CGI is a protocol for running programs on a WWW server. Whilst JAVA can also be us
train reservation algorithm
Discuss about the Electronic computer The first general function programmable electronic computer was the Electronic Numerical Integrator and Computer (ENIAC), built by John V
What are the Touch Panels In case of touch panels, displayed objects or screen positions is allowed to be selected with the touch of a finger. A typical application of touch pa
Integrating Virtual Memory, TLBs, and Caches - computer architecture: There are 3 types of misses: 1. a cache miss 2. TLB miss 3. a page fault 2 techniqu
Any data storage device. This having of your CD-ROM drive, hard disk drive and floppy disk drive.
Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a particular area of random access memory (RAM) so that they can be acc
Briefly analyse and compare the two website designs, applying in turn each of the six design principles. This will result in six brief paragraphs. As part of each analysis, expl
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