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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.
what are the applications of microprogramming
Q. What do you mean by Perfect Shuffle Permutation? Perfect Shuffle Permutation: It was proposed by Harold Stone (1971). Consider N objects each is represented by n bit number
Explain Gray Code Ans. Gray Code 1. Extremely useful code. Also termed as reflected code. 2. All gray code is different from the preceding and succeeding codes thr
Calculate the maximum access time that can be permitted for the data and control memories in a TSI switch with a single input and single output trunk multiplexing 2500 channels. Al
Which of the memories stores the most number of bits ? Ans. 5Mx8 = 5 x 220 x 8 = 40M (max).
Hierarchy Hierarchy is a process of ranking or ordering of abstraction. Hierarchy is decided by the help of 'divide and conquer' principle. Complex objects can be described
Q. Illustrate what is a ion pair energy? Answer:- Ion energy contains electric charges called protons (+) and neutrons (0) and electrons (-) charges. It's present in an at
Constant Voltage Sources An ideal constant voltage source maintains a given voltage across its load regardless of the current drawn from it .Most 'every-day' power supplies a
Q. What is Linked List? A linked list is a data structure formed by zero or more nodes linked by pointers. Every node has two parts as shown in Figure below. One of them is inf
Q. Explain Programmer Visible Registers? These registers can be accessed employing machine language. In general we encounter four kinds of programmer visible registers.
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