1. Definition
1.1. series of instuctions that tells the computer what task to perform and how to perform them
2. Types of Software
2.1. System software
2.1.1. consist of program that control or maintain the operations of the computer and its devices
2.2. Application software
2.2.1. consist of programs designed to make users more productive and assist them with personal task
3. Type of OS
3.1. Stand Alone OS
3.2. Server OS
3.3. Mobile OS
4. Function of OS
4.1. Start and Shutdown a Computer
4.1.1. cold boot - start computer that completely powered off
4.1.2. warm boot - restart computer that already powered off
4.2. Provide a user interface
4.2.1. controls how you enter data and instructionsand how information is displayed on the screen
4.3. Manage Program
4.3.1. manage multiple programs and processes
4.4. Manage Memory
4.4.1. optimizes the use of RAM
4.5. Establish an Internet Connection
4.5.1. provide a means to establish Internet connection
4.6. Monitor Performance
4.6.1. program that assesses and reports information
4.7. Control a Network
4.7.1. organizes and coordinates how multipleuser access and share resources
5. Types of Utility Program
5.1. File Manager
5.1.1. provide routine file management tasks
5.2. Disk Cleanup
5.2.1. searches and removes unnecessary files
5.2.1.1. eg: CCleaner , microsoft disk cleanup
5.3. Compression Tools
5.3.1. to shrink the size of a file
5.3.1.1. eg: winRaR , winzip
5.4. Anti-Virus Program
5.4.1. search,protect and remove viruses
5.4.1.1. eg: Kapersky ,Avira
5.5. Spyware Remover
5.5.1. detects and deletes spyware
5.5.1.1. eg: spyware bot, spyware doctor
5.6. Disk Defragmenter
5.6.1. reorganizes the files and unused space
5.6.1.1. eg: MyDefrag, Defragger
5.7. Backup and Restore
5.7.1. backup - to copy files to another storage medium
5.7.1.1. eg: windows backup, bacula
5.7.2. restore - reverses the process and returns backed up files to original form
6. Application Software
6.1. Define: Programs designed to make users more productive and assist with personal tasks
7. Types of Application Software
7.1. Web Browser
7.1.1. allows user to access and view web pages or access web 2.0 programs
7.1.1.1. eg: Internet Explorer, Mozilla Firefox
7.2. Word Processing
7.2.1. allows users to create and manipulate documents
7.2.1.1. eg: Microsoft Office Word, KWord
7.3. Spreadsheet
7.3.1. allows users to organize data in rows and columns and perform calculations
7.3.1.1. eg: Microsoft Office Excel
7.4. Database
7.4.1. allows users to create,access and manage a database
7.4.1.1. eg: Microsoft Office Access, MariaDB
7.5. Presentation
7.5.1. allows users to create visual aids for presentations
7.5.1.1. eg: Microsoft Office Powerpoint, Showcase