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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).
Explain Batch operating systems. Batch operating systems : A batch is a sequence of jobs. Such batch is submitted to batch processing operating systems moreover output would s
If the product of two integers a and b is even after that prove that either a is even or b is even. Answer: It is illustrated that product of a and b is even so let a * b = 2n.
What is system software? Give an example. It is a collection of program that are implemented as needed to perform functions such as I. Receiving and interpreting user comma
Determine the benefits of developing prototype According to SOMM [96] benefits of developing prototype are as following: 1. Communication gap between clients and software
Q. Explain the Structured Design of system? Structured Design utilizes graphic description (Output of system analysis) and focuses on development of software specifications.
The electro mechanical switch (developed in 1938) had fewer moving parts than earlier switches. (A) No. 1ESS (B) Strowger (
How does output caching work in ASP.NET? Output caching is a powerful method that enhances request/response throughput by caching the content generated from dynamic pages. O
What are the Input devices Various devices are available for data input on graphics workstations. Most systems have a keyboard and one or more additional devices specially desi
What is error checking? It computes the error correcting code (ECC) value for the data read from the given sector and compares it with the corresponding ECC value read from the
Q Write a menu driven program to perform subtraction in base 5 using r and (r-1) complement with necessary validations.
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