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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.
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
Data validation is a significant concept in VBA. Application process and a custom dialog box can be used to accurate input errors. You can assign an application process to the fram
Explain simple telephone communication system with circuit and equation of current flow in microphone? Simple Telephone Communication: In the simplest type of a telephone cir
Instruction execution is performed in CPU registers. Although before we define process of instruction execution let's first give details on Registers (temporary storage location in
What is Collation Collation refers to a set of rules that verify how data is sorted and compared. Character data is sorted using rules that explain the correct character se
What is meant by a priority encoder? Ans: Priority encoder- Basically an encoder is a combinational circuit which performs the inverse operation of a decoder. The input c
Lists out some applications of Shift Register. Ans: Applications of Shift Registers: a. Serial to Parallel Converter b. Parallel to Serial Converter c. Delay li
Question 1: (a) What do you meant by an expert system? (b) Describe benefits of the EDI. (c) Describe what you understand by: (i) File Infectors (ii) Boot Sect
Define buffering. A buffer is a memory area that keeps data while they are transferred among two devices or among a device and an application. Buffering is done for three reas
A star connected intermediate exchange is known as a? A star connected intermediate exchange is termed as a Hub exchange.
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