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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.
What layers are covered under end to end layer connectivity? The layers 4 to 7 of ISO-OSI reference model communicate along with peer entities into the end systems. There is n
Analysis: Basically, it is the process of determining what requirement to be done before how it should be done. In order to accomplish this, the developer shows the existing sy
formation of bond etc
Q. Explain Functional Roles of Information System? Functional Roles of Information System 1 Lower Costs - a) Use IT to significantly reduce the cost of business proce
Explain about the Prepurchase Interaction activity. Prepurchase Interaction: This interaction for consumers comprises three activities: • Product or service search and di
What is a binary tree? A binary tree 'T' is described as A finite set of elements, known as nodes, such that: either (i) or (ii) happens: (i) T is empty (known as the 'nu
History of Information Technology and Organisations The increasing sophistication in information systems and the growth in their use have been influenced by three main factors
What is slack? 'Slack' is the amount of time you have which is measured through while an event ‘really happens' and while it ‘should happen’. The term ‘really happens' can a
First-Order Logic : There's Reasoning, and then There's Reasoning As humans, we have always prided ourselves on our capability to think things by: to reason things out and c
Q. Define pvm library functions? int info = pvm_freebuf( int bufid ) organizes of a message buffer. bufid message buffer identifier. int pvm_getsbuf( void
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