Chapter 1.1, Problem 9STE

Program Plan Intro

Computer Systems:

• A computer denotes a machine or device that would accomplish processes, computations as well as operations centered on instructions provided by software.
• A computer follows an instruction set that is termed as a program.
• The collection of programs used by computer is termed as software.
• The computer installation is made up by physical machines termed as hardware.

Operating system:

• An operating system denotes a program that would act as a boundary between software as well as hardware.
• It denotes a unified set of specialized programs used for managing overall resources as well as computer operations.
• It denotes specialized software that would control as well as monitor execution of all other programs that resides in computer.
• It includes application programs as well as system software. 
• It makes computer system suitable for efficient usage.
• It hides details of hardware resources from users.
• It provides users a suitable interface for computer system usage.
• It manages computer system resources.
• It provides efficient as well as fair resource sharing among programs as well as users.