Basic CS-Operating System [3i Infotech Placement]: Sample Questions 26 - 26 of 89
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Question 26
Explanation
- OS program acts as an interface between the user and the computer hardware controlling the execution of all kinds of programs.
- Used to run other programs and applications.
- Performs basic tasks-
- Recognizing input from the keyboard
- Sending output to the display screen
- Keeping track of files and directories on the storage drives
- Controlling peripheral devices, such as printers.
Components of Operating Systems
- Kernel:
- Provides basic control to all of the computer՚s hardware devices.
- Manages memory for programs in the RAM.
- Program execution:
- Provides an interface between an application program and the computer hardware.
- Allows application program to interact with the hardware.
- Interrupts:
- Automatically saves local register contexts, and running specific code in response to events.
- Computers support hardware interrupts, and allow the programmer to specify code run when that event takes place.
- Memory management
- Multitasking, disk access and file system management.
- Networking & security
- Graphical user interface:
- The modern computer systems support graphical user interfaces.
- Evolve over time.