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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 is the difference between a structure and a table? Structures are constructed the almost the similar way as tables, the only dissimilarity using that no database table is
Explain Stored Program Control. Stored Program Control: Modern digital computers utilize the stored programmed idea. Now, a program or a set of instructions to the computer i
Explain the importance of computer architecture Studying the architecture implies working on machine language programs. However, this isn't practical when we design a computer
Binning process is very helpful to save space. Performance may differ depending upon the query generated sometimes solution to a query can come within some seconds and sometimes it
Basic Operational Concepts of a Computer: Most of computer operations are executed in the ALU (arithmetic and logic unit) of a processor. For an example: to add 2 numb
How many two-input AND and OR gates are required to realize Y=CD+EF+G ? Ans. Y=CD+EF+G No. of two i/p AND gates=2 No. of two i/p OR gates = 2 One OR gate to OR CD and EF
Explain the uses of Keyboards An alphanumeric keyboard for a graphics system is used primarily as a device for entering text strings. Keyboards can also be provided with featur
What are the two aspects of locality of reference? Define them. Two aspects of locality of reference are temporal aspects and spatial aspect. Temporal aspect is that a r
Quantifiers and Variables - propositional model: There is one question is arrives that 'What do sentences containing variables mean?' In other way of words, how does a first-o
De Morgan's Laws : With continuing the relationship between ^ and ? , we can also needs De Morgan's Law to rearrange sentences involving negation in conjunction with these con
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