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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 are the types where relationship exists in Electronic Market Place? In this two forms of relationships can exist, they are: a. Customer/seller linkage is recognized at
Write a menu-driven program to change a time in seconds to other units (minutes, hours, etc.). The main script will loop to continue until the user chooses to exit. Every time in
Execution of a program in CPU is completed employing different set of registers and their individual circuitry. As CPU registers are used for execution of interrupt service routine
State about the Object oriented analysis design Object oriented analysis design (OOAD) is a bottom up approach which supports viewing system as a set of components (objects) w
QWERTY-based keyboards In addition the standard alphabet keys having QWERTY arrangement, a computer keyboard also comprises the control (alt, Del, Ctrl etc. keys) and function
Explain difference between Security and Protection? Protection mechanism: The subsequent mechanisms are commonly utilized for protecting files having programs and data. (a
In what order do the events of an ASPX page execute. As a developer is it important to understand these events? If you try to access it in Page_Load that is way previous th
At a particular moment in time the output of a COMBINATIONAL logic circuit depends uponthe inputs to the circuit at the same instant.(Unlike sequential logic circuits where the out
Q. Explain Keyboard Input and Video output ? A Keystroke read from keyboard is termed as a console input and a character displayed on the video screen is known as a console out
What is a Multiplexer Tree? Ans Multiplexer Tree: The largest available MUX IC is 16 to 1. Meeting the larger input requires there must be a provision to expand this. It
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