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Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a particular area of random access memory (RAM) so that they can be accessed more rapidly. Access in shadow RAM is typically in the 60-100 nanosecond range while ROM access is in the 125-250 ns range. In some operating systems like DOS, certain BIOS routines are not only used during the boot or start-up of the system, but also during normal operation, particularly to drive the video display terminal. In Windows and OS/2, thus, these routines are not used and the use of shadow RAM is not essential. In some systems, the user can turn the use of shadow RAM off or on.
Simplified the Boolean Algebra (x + y)(x + z) simplifies to ? Ans. x + yz as simplified the Boolean Algebra expression. [(x + y) (x + z)] = xx + xz + xy + yz = x + xz + xy + y
Hardware Support for paging
Q. Explain about data registers? The data registers are used just for storing intermediate results or data and not for operand address calculation. Some dedicated address re
Fixed Arithmetic pipelines We take the illustration of multiplication of fixed numbers. Two fixed point numerals are added by ALU (Arithmetic and logic unit) using shift and ad
Define Mercantile Process Model from the Merchant’s perspective along with a suitable diagram. This model consists of three activities into the purchase consummation phase: Aut
Q. Show the Mailing lists on Internet? Another exciting aspect about E-mail is that you can find groups of people who share your interests-whether you are inclined toward games
Fourth Generation (1972-1984) The next generation of computer systems used the large scale integration (LSI -1000 devices per chip) and very large scale integration (VLSI - 100
The combinational circuits employ the comparators for comparing the numbers and storing them on the basis of maximum and minimum functions. Likewise in the interconnection networks
What is polling? Polling is a scheme or an algorithm to recognize the devices interrupting the processor. Polling is employed when multiple devices interrupt the processor by o
Q. How to Changing the Directory in DOS? You can change the directory. After changing the directory, the new directory becomes the default directory. For example, you change th
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