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Q. Explain about System Deadlock?
A deadlock denotes to the condition when simultaneous processes are holding resources and putting off each other from finishing their execution.
The consequent situations can avoid deadlock from happening:
1) Mutual exclusion: All processes are given exclusive control of resources allotted to it.
2) Non-preemption: A process isn't permitted to free its resources until task is completed.
3) Wait for: A process may hold resources at the same time as waiting for extra resources.
4) Circular wait: Many processes wait for resources from other processes in a circularly dependent circumstance.
Throughput of a system is? Ans. "Throughput" of a system is no. of programs processed by this per unit time.
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plz expalain interfacing of 8259 with 8085 step wise
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