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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.
Two-dimensional array is represented in memory in following two ways: 1. Row major representation: To attain this linear representation, the first row of the array is kept in
Q. Explain about of Unicode? This is a newer International standard for character representation. Unicode offers a unique code for each character irrespective of Program, platf
The scope of the experts system is very limited. It cannot work outside the field it is being used. The users knowledge is required to adjust to new situation. To reduce
What are the Process states? By the courses of implementation, processes change state. Status of a process is express by its present activity. Dissimilar practical states of
Explain the operation of 8:1 multiplexer. Ans: In this multiplexer 8 Input and 1 Output and three select lines i.e. S 2 , S 1 , S 0 are given. Any one of the inputs will be
What is a accepting computation history? An accepting computation history is explained as , Let M be a Turing machine and w be a input string, for M on w is a sequence of con
Call by value and Call by reference Call by value means sending the values of the arguments- The value of each of the original arguments in the calling function is copied in
Q. Explain Direct Addressing Mode with example? Direct Addressing Mode A direct operand signifies to contents of memory at an address referred by the name of the variable.
explain different design interrupt processing?
Explain characteristics of program translation model. The program translation model characteristics are: A program should be translated before this can be executed.
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