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All components of computer communicate with processor by the system bus. Which means I/O devices required to be attached to system bus. But I/O devices aren't connected directly to computer's system bus. In its place they are attached to an intermediate electronic device interface known as a device controller that in turn is attached to system bus. Therefore a device controller is an interface between a system bus and an I/O device. On one side it knows how to communicate with I/O device associated to it and on the other it knows how to communicate with computer's CPU or processor and memory via the system bus.
INT 21H supports about 100 different functions. A function is recognised by putting the function number in AH register. For illustration if we want to call function number 01 then
What is the advantage of doubly linked list over singly linked list? Ans: Benefits of the doubly linked list over singly linked list 1. A doubly linked list can be pas
Explain a macro Macro is a preprocessor directive, also called as macro definition takes the following general form: #define identifier string
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Explain the types of computer architecture Computer architecture can be divided into three main categories: Instruction Set Architecture, or ISA, is the image of a computing
Any function can be expressed in a truth table.A truth table lists all possible combinations ofinputs and gives the output produced in eachcase.Truth tables must include all combin
What are the phases of swapping a page from the memory? Page stealer searches the page eligible for swapping and places the page number in the list of pages to be swapped. K
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