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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.
If voice is converted to digital form using PCM, how many bits of data will be produced in half a second? While voice is converted to digital by using PCM that is Pulse Code Mo
(a+b-c)*(e/f)-(g-h/i)
Absolute addressing and Implied addressing A fixed address is specified and also called as direct addressing. The location of data is implied by instruction itself, so no
how to get the Vo
Demonstrate how a typical DMA controller can be interfaced to an 8086/8085 based maximum mode system. For 8088 in maximum mode: The RQ/GT0 and RQ/GT1 pins are used to is
Data packets: A data packet consists of the PID which is followed a 16-bit CRC and by 0-1023 bytes of data payload (up to 1024 in high speed and at most 8 at low speed) The
Q. How codes represent data for scientific calculations? How codes are in fact used to represent data for scientific calculations? The computer is a discrete digital device
How do you create special files like named pipes and device files? The system call method forms special files in the following sequence. Kernel assigns new inode,
Before we take a detailed look about software languages, let us consider the role of computers in engineering. Computers are commonly used in the areas of 'Computer Aided Design /
SMTP is a Protocol used for transferring message among end user & Mail Server.
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