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When can a user program execution be interrupted?
It won't be desirable to interrupt a program when an instruction is being executed and is in a state such as instruction decode. The most desirable place for program interruption will be when it has completed the prior instruction and is about to begin a new instruction. Figure below shows instruction execution cycle with interrupt cycle where interrupt situation is acknowledged. Please remember that even interrupt service routine is also a program and after recognizing interrupt next instruction executed by instruction cycle is first instruction of ISR (interrupt servicing routine).
to find the area under curve
Q. Explain about Deadlock Avoidance? To prevent deadlocks two kinds of techniques are used: 1) Static prevention: It employs P and V operators in addition to Semaphores to
Perform the 23 - 48 operations using the 2's complement method. Ans. Given 23 - 48 firstly add them 23 0 1 0 1 1 1 - (- 48) +
Explain macro definition. A unit of specification for a program generation is termed as a macro. This consists of name, body of code and set of formal parameters.
Illustrate what is pascal's principle? Answer:- Pascal's Principle declares that the pressure is transmitted evenly through a liquid. That's why when you pump up a balloon
Write a program to input an address i.e. 20 Hex and read the byte (char) contents of that address Answer include void main() { char prompt; Date: 26th August 2012
#what is the history of computer science
Define UFD and MFD. In the two-level directory structure, every user has own user file directory (UFD). Every UFD has a same structure, but lists only the files of a single u
Q. Characteristics of extreme unencoded micro-instructions? 1. Two sources can be attached by respective control signals to a single destination; though only one of these sourc
Explain about the e-commerce over extranets. Extranets are regarding “joining up” the supply chain-suppliers, distributors, resellers and customers are enabling business-to bus
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