COMPUTER SCIENCE AND ENGINEERING
SYSTEM SOFTWARE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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User Interface, multitasking, communicates with hardware via device drivers
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User Interface, multitasking, saving
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fetch, decode and execute instructions
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memory management, fetching instructions, user interface
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Detailed explanation-1: -An operating system has three main functions: (1) manage the computer’s resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.
Detailed explanation-2: -The main purpose of device drivers is to provide abstraction by acting as a translator between a hardware device and the applications or operating systems that use it. Programmers can write higher-level application code independently of whatever specific hardware the end-user is using.
Detailed explanation-3: -An operating system is a program on which application programs are executed and acts as a communication bridge (interface) between the user and the computer hardware. The operating system also includes programs to manage traffic controllers, a scheduler, a memory management module, I/O programs, and a file system.