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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. Functional Requirements of a Control Unit? Let's first try to define functions that a control unit should perform in order to get things to happen. However in order to defin
Step 1: Click on Edit Step 2: Select reference Step 3: Select Translation Step 4: Click on SSI Step 5: For showing the SSI file; choose one of the following options:
The electro mechanical switch (developed in 1938) had fewer moving parts than earlier switches. (A) No. 1ESS (B) Strowger (
Q. What do you mean by Linker? For modularity of your programs it is better to break your program in numerous sub routines. It's even better to put common routine such as read
Distortion caused on telephone line by an adjacent one is called (A) Cross Fire (B) Inductive Disturbance (C) Cross Talk (D) Non
In class SlotCollection, remove the fields slot1, slot2, slot3 and slot4 and replace them by an array of slots. Modify the rest of the program to work using this array. There is
Magento supports installation of modules by a web-based interface accessible by the administration area of a Magento installation. Modules are hosted on the Magento eCommerce websi
Q . Write a subroutine in C which toggles the cursor? Write a subroutine in C which toggles the cursor. It takes one argument which toggles the value between on (1) and off (0)
Define Process Control Block (PCB). Process Control Block (PCB): Information related with each process is stored into Process control Block. a) Process state b)
Q. How do the registers help in instruction execution? We will discuss this in following steps: Step 1: First step of instruction execution is to fetch instruction which
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