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What does operating system means?
It means that there is no operating system installed on your computer, or it is in a non-bootable configuration.
What was the most popular non-GUI operating system for the PC?
disk operating system(DOS)
What is the difference between OS and RTOS?
Linux and RTOS are two distinct concepts. Linux is the name given to a specific operating system. An RTOS (Real-Time Operating System) is a specially designed TYPE of Operating System. Where a 'normal' Operating Systems schedule resources/processing time to programs when they are available to the system, whereas an RTOS specializes in allowing programs to run in 'real time', meaning they are able to respond to changes (typically from an external source) as close to instantly as possible. Typically, you would find an RTOS in situations where the computer has to react instantly to changes, such as an industrial control system or systems that monitor and control the power grid. If the operating system prevented the program from responding in a timely fashion, the program would be worthless. Real-time Operating Systems are typically very small, optimized systems, whereas a standard OS is very large, feature-laden and has thousands of different features that run at once. There IS a pared-down version of Linux known as "RTLinux" which falls into the category of an RTOS, but it's not the version of Linux most people are used to seeing. It's very purpose-build, optimized and fast, unusable by anyone but system designers who can work with such an OS.
What does missing operating system mean?
It means that there is no operating system installed on your computer, or it is in a non-bootable configuration.
Why real time system was introduced?
Real time introduce for correct operation, and it required to produce a result within a non-negotiable time period.
What do you mean by modification of an operating system?
os is an operating system.if the os is not they it is non-bootable configuration.
Difference between real time system and interactive system?
Real-time systems run only programs that are intended to further the application at hand.Interactive systems are general purpose and may run arbitrary programs that are not cooperative or even malicious.
What is a non-web based system?
A non-web based system might be a stand-alone system or a desktop based system which might also be referred to as an native application for a specific operating system.
What are examples of non-application software?
The process queue in an operating system is software that is not an application
Characteristics of real time operating system?
The unique requirements of real-time operating systems can be characterized by five general areas and are discussed below:Determinism: Determinism is concerned with the time it takes, delay time, for an operating system to acknowledge an interrupt. An operating system is deterministic to the extent in that the performance of operations are at fixed, predetermined times or within predetermined time intervals.Responsiveness: Responsiveness is concerned with the time an operating system services an interrupt once an acknowledgement is received. There are three aspects of responsiveness which include the following:1) The time required to initially handle the interrupt and being execution of the interrupt service routine (ISR).2) The time required to perform the ISR which is generally dependent on the hardware platform.3) Since an interrupt can be affected by the arrival of another interrupt the nesting effect is of interest.User control: In real-time operating systems, the users have find-grained control over scheduling task priority. The user must have a complete understanding between hard and soft tasks and to specify relative priorities within each class. Several characteristics may be available for the user to specify in these systems, such as, the use of paging or process swapping, what processes must always be resident in main memory, what disk transfer algorithms are to be used, the various processes' priority bands, etc.Reliability: In comparison to non-real-time operating systems, reliability of real-time operating systems is far more important since the system is responding to and controlling events in real time. Performance degradation or loss thereof may have catastrophic consequences, ranging from financial loss to major equipment damage and even loss of life. Non-real-time systems include, but not limited to, transient failure and processor failure in a multiprocessor system.Fail-soft operation: The characterization of Fail-soft operation refers to the ability of a system to fail in such a way as to preserve as much capability and data as possible. In a real-time system, the system attempts to correct the problem or minimize its effects while continuing to run. Stability is an important aspect of fail-soft operation, and an example of stability is provided for clarity purposes. In cases where it is impossible to meet all task deadlines, the real-time system remains stable while meeting the most critical, highest-priority tasks even if some of the less critical task deadlines are not met. The following features are usually included in real-time operation systems: fast process or thread switch, small size, ability to respond to external interrupts quickly, multitasking with interprocess communication tools such as semaphores, signals, and events, use of special sequential files that can accumulate date at a safe rate, preemptive scheduling based on priority, minimization of intervals during which interrupts are disabled, primitives to delay tasks for a fixed amount of time and to pause/resume tasks, special alarms and time-outs, etc.
What is the difference between a device driver and 'plug and play'?
plug and play devices are automatically detected by the operating system, where as non plug in play devices are not automatically detected by the operating system.
Is a operating system hardware software?
An operating system is a software which is used to manage or open all the softwares in the computer/deviceANS2:A computer's operating system is a set of programs that controls the hardware. It is certainly software even if it happens to be in some non-writeablestorage such as an e-prom.
