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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.
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
What is Digitizers A common device for drawing, painting, or interactively selecting coordinate positions on an object is a digitizer. These devices can be used to input coordi
Q. Develop a Menu driven program with following menu: 1. Octal to Decimal 2. Octal to Hexadecimal 3. Octal to Binary
It is a 16 bit special function register in the 8085 microprocessor. It remains track of the next memory address of the instruction that is to be implemented once the implementatio
Q. How to Correct the error condition while copying file in DOS? In most case, DOS allows you to correct the error condition and retry the command (by pressing R). If the drive
Describe a interface 'Human' with methods as walk' and 'speak'. Describe a class 'User' implementing 'Human'. Describe a work() method in User class.Add a class 'Person' also execu
Explain any three parsing techniques. Following are three parsing techniques: Top-down parsing: This parsing can be viewed as an attempt to get left-most derivations of an
The features are needed to implement top down parsing are? Ans. Source string marker, Prediction making mechanism and also matching and backtracking mechanism features are need
What is bus arbitration? It is method by which the next device to become the bus master is selected and bus mastership is transferred to it. There are two ways for doing this:
What is Reflection? It extends the benefits of metadata by permitting developers to inspect and use it at runtime. For example, dynamically verify all the classes contained in
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