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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.
How does an authentication system be different from a firewall into functioning? Authentication verses firewall User Authentication and Authorization A significan
Why address bus is unidirectional and data bus is bidirectional? Ans) Because there is no require address transaction among processor and peripheral device but data bus is req
How many bits must be decoded for chip select? What is the size of decoder when 128 × 8 RAM chips are required to provide a memory capacity of 2048 bytes? Ans. All higher order l
overlapping segmentation process in 8086
Discuss the basic entities of World Wide Web in brief. World Wide Web: This is a complicated client/server system in that a web client communicates along with the web ser
Question 1: a) Name and give a brief description of three Real-Time Systems. b) State three downfalls of Embedded Systems. c) Differentiate between a microprocessor an
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a. Sketch the excitation diagram indicating the last states and next states. b. Build the circuit using a Synchronous Counter with JK FF and NAND gates only. Replicate the circ
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The PHP Hypertext Pre processor is a programming language that permits web developers to make dynamic content that interacts with databases. PHP is basically used for developing we
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