SS 1 WEEK TWO LESSON NOTE (ICT_323)

 

Ss1

TOPIC: COMPUTER SYSTEM SOFTWARE

Introduction

Software, commonly known as programs consists of all the electronic instructions that tells the hardware how to perform a task.

System Software

System software are set of instructions that are embedded into hardwares from the manufacturer of those hardware to allow for proper functionality of the hardware.

Classification of System Software

System software can be classified into three types. They are:

1.     Operating system

2.     Translators

3.     Utilities

 

Operating System

An operating system or OS is a software program that enables the computer hardware to communicate and operate with the computer software. without an operating system a computer would be useless.

 

Types of Operating System

1.     Real-time Operating system (RTOS): a real-time operating system processes inputs simultaneously, fast enough to affect the next input or process

2.     Single-user, single task: a single user OS, as the name suggests is designed for one user to effectively use a computer at a time. This operating system is designed to manage the computers so that one user can effectively do one thing at a time.

3.     Single-user, multitasking: this is the type of operating system most people use on their desktop and laptop computes today. It entirely makes a user to be writing a note in word processor while downloading a file from the internet and also printing a text of an email message

4.     Multi-user: multiuser operating system allows many different users to take advantage of the computer resources simultaneously.

5.     Distributed operating systems: in distributed operating systems; programs and files may be stored on different storage devices which are located in different geographical locations and may be accessed from different computer terminals.

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