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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.
Q. Illustrate Simple ALU Organisation? An ALU comprises circuits which perform data processing micro-operations. Though how are these ALU circuits used in conjunction of other
Subtraction of 01000-01001 using 2's complement method. Ans. Firstly 1's complement of 01001 is 10110 and 2's complement is 10110+ 1 =10111. Thus 01000 = 01000 - 01001
What are delay systems in telecommunication networks? Delay System: A class of telecommunication networks like data a network that places the call or message arrivals in a qu
Q. Explain Usenet and Newsgroups? In Internet there exists another way to meet people and share information. One such way is through Usenet newsgroups. These are special groups
Rentrag has decided to replace all of the computers currently being used by all of the business and office staff. He has asked you to recommend a set of specification for computers
What is a ABAP/4 module pool? -Every dynpro refers to exactly one ABAP/4 dialog program. Like a dialog program is also known as a module pool ,since it having on interactive mo
what is fresnel''s biprism?how it is used to determine wavelength of monochromatic source of light
CMOS circuits consume power ? Ans. As in CMOS one device is ON and one is Always OFF therefore power consumption is low or can say less than TTL.
Q. Returns information about present virtual machine? int pvm_parent( void ) Returns the tid of process which spawned the calling process. int pvm_tidtohost(
Problem: (a) Consider the following combinational circuit: (i) Calculate the propagation delay for each output. Assume each gate has a delay of 10 ns. (ii) The abo
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