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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 kinds of models? Class model - Objects in the system and their relationships. State model - Life history of the objects. Interaction model - Interactions between
A stationary random displacement signal was digitised at 64 samples a second and analysed to obtain an auto-spectral density. The signal was calibrated in mm units. The frame siz
Explain the Significance of Binary Data Controlled devices generally contain registers that are made up of binary digits (bits). The following illustration shows how these regi
what are the applications of microprogramming
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A Queue is a FIFO ( rst in, rst out) data structure. Given the following queue interface: public interface Queue { int size(); // current queue size boolean isEmpty(); //
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Explain about the function of network layer briefly in TCP/IP protocol stack. Internetwork Layer: The best-called TCP/IP protocol at internetwork layer is Internet Protoc
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