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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.
write a short note on the tri state ttl inverter
Q. Explain about Interrupt Procedure? The interrupt procedure uses request header to conclude the function requested by DOS. It also performs all functions for device driver. T
What are vectored interrupts? To decrease the time involved in the polling process, a device requesting an interrupt may recognize itself directly to the processor. Then the pr
What are the different scheduling policies in Linux The Linux scheduler has three different scheduling policies: one for 'normal'Processes, and two for 'real time' processes
With the help of a truth table explain the working of a half subtractor. Draw the logic diagram using gates. Ans: Half Subtractor: For the subtraction of B (subtrahend) f
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How to pass data from list to report? ABAP/4 gives three ways of passing data: ---Passing data automatically using system fields ---Using statements in the program to tak
Question: (a) (i) Explain properties of the WebService attribute. (ii) Discuss three properties of the WebMethod attribute. (b) What are WSDL documents used for? (c)
state function and path function
What is the function of a TLB (translation look-aside buffer)? A small cache called the TLB is interporated into MMU, which having of the page table entries that correspondi
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