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Questions and Answers
What is the main purpose of an operating system?
What is the main purpose of an operating system?
Where does the operating system typically reside in most computer cases?
Where does the operating system typically reside in most computer cases?
What is the function of BIOS in the booting process of a computer?
What is the function of BIOS in the booting process of a computer?
When referring to booting, what does 'cold boot' mean?
When referring to booting, what does 'cold boot' mean?
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Which of the following is NOT a main function of an operating system?
Which of the following is NOT a main function of an operating system?
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In which type of device does the operating system typically reside on a ROM chip?
In which type of device does the operating system typically reside on a ROM chip?
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What is the primary role of an operating system's user interface?
What is the primary role of an operating system's user interface?
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What is the primary goal of executing user programs by an operating system?
What is the primary goal of executing user programs by an operating system?
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What phase involves turning on a computer after it has been completely powered off?
What phase involves turning on a computer after it has been completely powered off?
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What is the primary function of BIOS in the booting process of a computer?
What is the primary function of BIOS in the booting process of a computer?
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Study Notes
What is Operating System (OS)?
- An Operating System (OS) is a program that acts as an intermediary between a user and computer hardware.
- It is a set of programs that coordinates all the activities among computer hardware resources.
Operating System Goals
- Execute user programs to solve user's problems easier.
- Make the computer system convenient to use.
- Use the computer hardware in an efficient manner.
Main Functions of an Operating System
- Start up the computer.
- Administer security.
- Control network.
- Access the web.
- Monitor performance and provide housekeeping service.
- Schedule jobs and configure devices.
- Manage memory.
- Provide user interface.
Location of Operating System
- In handheld devices like PDA, Mobile phone, the OS resides on ROM chip.
- In most computer cases, the OS resides on hard disk.
Operating System Functions
- Booting: a process of starting or restarting a computer.
- Types of booting:
- Cold boot: process of turning on a computer after it has been powered off completely.
- Warm boot: process of restarting a computer that is already powered on.
Personal Computer Booting Process
- Step 1: Power supply sends signal to components in system unit.
- Step 2: The processor accesses BIOS (Basic Input/Output System) to start the computer.
- Step 3: (not specified in the text)
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Description
This quiz explains the concept of an operating system, its role as an intermediary between a user and computer hardware, and its goals of executing user programs efficiently. It also discusses how the operating system coordinates activities among computer hardware resources to make the system convenient to use.
