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What is process control block?
Each process is shown in the OS by a process control block. It having many pieces of information associated with a specific process.
Describe Real and protected mode: Operation of Real mode interrupt: When microprocessor completes executing the current instruction, it concludes whether an interrupt is act
How are devices represented in UNIX? All devices are shown by files called special files that are located in /dev directory. Therefore, device files and other files are named a
Give brief explanation about the keyboards Keyboards are generally not offered as the number of options is limited and owners of the system do not want customers keying in info
Can we create a gui status in a program from the object browser? Yes. You can make a GUI STATUS in a program using SET PF-STATUS.
Explain the types of hardware used in supermarkets These use many types of specialist I/O hardware. For instance: - Bar code readers/scanners (to read product details and e
Forward checking: Whether to add some sophistication to the search method there constraint solvers use a technique called as forward checking. So here the general idea is to w
What is a deadlock? A deadlock is a situation that can increase when two units, A and B use a shared resource. Assume that unit B cannot complete its task unless unit A complet
What is NEG instruction Arithmetic sign inversion or two's complement (NEG). NEG instruction two's complements a number which means that arithmetic sign of a signed number cha
Telex is a (A) Telephone Service between various subscribers (B) Tele printer Service between various subscribers (C) Television Service between various subscri
Write a short notes on storage classes in C. Every variable and function in C has two attributes : type and storage class. The four storage classes are automatic, external, reg
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