a) How operating systems creates an impression of doing several jobs at the same time
An operating system is an organised collection of a suite of programs which controls and
supervises computer system hardware and provides services to programmers and users of a
computer system. Operating systems have such features as; it performs control oriented tasks
such as multiprogramming, multi-processing and batch processing, allow 'for time-sharing such
that multiple users can access a single computer system at one time and allows for concurrent
execution of programs so as to enhance speedy processing of data.
b) i) Define the term : “real time processing system” A real-time operating system is an
operating system that guarantees a certain capability within a specified time constraint. A key
characteristic of an RTOS is the level of its consistency concerning the amount of time it takes to
accept and complete an application task,
ii) Examples of real-time processing systems
Anti-missile defense systems, airplane landing control system, flight simulation systems,
electronic fund transfer systems, and tickets reservation systems.
Kavungya answered the question on May 13, 2019 at 13:26
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