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What is Virtual memory
The term virtual memory signifies something that appears to be present though actually it is not. Virtual memory technique enables users to use more memory for a program than real memory of a computer. A programmer can write a program that requires more memory space than capacity of the main memory. Such a program is executed by virtual memory technique. Program is stored in the secondary memory. Memory management unit (MMU) transfers currently required part of the program from the secondary memory to main memory for execution. This part of program is executed by the processor. After execution this part of program is sent back to the secondary memory together with immediate results. Afterwards CPU takes another part of the program for execution. So the main memory always keeps only currently needed part of the program. This type of 'to and from' movement instructions and data between main memory and secondary memory is termed as swapping. So a program requiring more memory space than capacity of the main memory can executed employing a swapping technique. This concept is called virtual memory technique.
Paged virtual memory: Mostly all implementations of virtual memory divide the virtual address space of an application program into pages; a page is a block that contains conti
Why disable statements are not allowed in functions? If disble statement is used in function,it invalids function and its return value. So disable statements aren't
Do you have an experience on ArcGIS ?
Identify the type of cohesion in the following statements: 1. Compute average daily temperatures at various sites 2. Initialize sums and open files 3. Create new temperature rec
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Why do we need DMA? DMA is used to transfer the block of data directly among an external device and the main memory without the continuous intervention by the processor.
Consider the following linear programming problem: Minimize: 70M + 40N Subject to: 3M + 7N ≥ 233 10M + 2N ≥ 254
Flag is known as Low order register & Accumulator is known as High order Register.
Commutatively of Connectives You will be aware from the fact that some arithmetic operators have a property that it does not matter which way around you give the operator input
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