Chapter 9, Problem 9SG

Program Plan Intro

Multitasking:

• Multitasking is a technique in which Central Processing Unit (CPU) makes the user to perform the instructions from multiple programs at a time.
• It switches over between the programs and instructions.
• It involves one CPU which works with multiple programs.

Operating System (OS):

• OS is the term that acts as an interface between the hardware and the user.
• It is the first program loaded into the computer memory whenever the computer starts up.
• It is responsible for the management and co-ordination of activities on a computer system.
• The most important program that runs on a computer is operating system.
• OS does basic operations such as getting input from the keyboard, displaying output in the monitor and monitoring the files.
• OS controls the peripheral devices like printers, hard drives and mouse.
• The responsibilities of OS are bound to get higher when it comes to security, because it provides the access rights for users.