Lesson 2 - Operating System

Program that acts as an intermediary between a user of a computer and the computer hardware.

• Operating System

• Computer System

• Interrupt

What are the 4 components of a Computer System?

• Hardware

• Operating System

• Application Programs

• Users

• Bootstrap

Provides basic computing resources.

(Ex: CPU, memory, I/O devices)

• Hardware

• Operating System

• Application Programs

• Users

Controls and coordinates use of hardware among various applications and users.

• Hardware

• Operating System

• Application Programs

• Users

Define the ways in which the system resources are used to solve the computing problems of the users.

(Ex: word processors, compilers, web browsers, database systems, video games)

• Hardware

• Operating System

• Application Programs

• Users

People, machines, other computers

• Hardware

• Operating System

• Application Programs

• Users

Users want:

(NOTE: They don't care about resource utilization.)

• Convenience

• Ease of Use

• Good Performance

• Bad Compatibility

OS has a universally accepted definition.

• True

• False

The one program running at all times on the computer.

• Kernel

• Bootstrap

• Interrupt

Is loaded at power-up or reboot.

• Kernel

• Bootstrap Program

• Interrupt