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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.
(i) A multiplexer combines four 100-Kbps channels using a time slot of 4 bits. Each Frame has the size of 16 bits. a) Show the output with the four inputs as shown in the figu
What is cyclomatic complexity? Cyclomatic complexity is a computer science metric (measurement) developed by Thomas McCabe used to generally calculate the complexity of a progr
What is the best way offload responsibility? The best way to offload responsibilities is to purchase services through a Service Provider. ISPs, customers and Service Provide
Linked list means node which is linked each other with a line. It means that every node is connected with another one. Every node of the list hold the reference of the next node.
Q. Describe the Limitation of FAT16? DOS designers decided to use clusters with as a minimum four sectors in them (so a cluster size of at least 2KB) for all FAT16 hard disks.
How to send a report to the printer instead of displaying it on the screen? We can send a report to the printer instead of displaying it on the screen. To do this, use the key
What is an I/O buffer? What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example. One type of I/O requirement arises from
Q. Explain about Quarter Inch Cartridge Tapes? Quarter Inch Cartridge Tapes (QIC Standard): These tape cartridges record information sequentially in a track with one head. Wh
What is meant by concurrent execution of database transactions in a multi user system
What does the 'SUPPRESS DIALOG' do? Suppressing of whole screens is possible with this command. This command permits us to perform screen processing "in the background". Sup
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