Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
PRINCIPLES OF INFORMATION TECHNOLOGY Understanding Types & Uses of Software 1 Lesson Objectives ■ Define operating systems software ■ Identify fundamentals of operating systems software ■ Define application software ■ Identify components of operating systems software ■ Identify open source and proprietary licenses ■ Demonstrate proper use of system management tools IT: PIT: Understanding Types & Uses of Software All rights reserved. Copyright © Texas Education Agency, 2013. 2 Operating Systems Software Definition: An operating system, also called OS, is program code/software that tells the computer hardware what to do. 3 Operating Systems Software Fundamentals ■ When a computer is turned on, it first begins a Power-On Self Test, often referred to as POST. ■ The OS is responsible for the look of the desktop at power-up. ■ The OS usually is loaded onto the hard drive memory of the computer. ■ The OS allows the hardware pieces to communicate with each other. 4 Operating Systems Software Fundamentals ■ The OS displays icons on the desktop of different programs/applications that are loaded onto the computer. ■ Application software: programs written to perform a specific function specified by the user such as Word processing or a spreadsheet application. ■ As the user is creating a document, the OS is what allows the key presses on the keyboard to register as alphabet characters, or numbers, or symbols on the application. ■ When you save the document, it is the OS that allows the document to be placed in the memory on the drive the user selects. 5 Operating Systems Software Fundamentals ■ Most modern Operating Systems have a user friendly GUI ■ GUI: stands for Graphical User Interface ■ Example of GUI: Most current Operating Systems use the same basic picture/icons for each window using graphics: – Each button in the upper right corner performs the same function, no matter which window or application you have open – Minimize – Maximize/Restore – Close 6 Operating Systems Software Components ■ If you open the control panel you will see many available components/functions of the operating system ■ Adding new hardware ■ Security settings ■ Performance Tools 7 Operating Systems Software Components ■ Display/Appearance – Desktop color – Desktop background – Screensaver – Sounds – Mouse Pointers – Monitor Resolution 8 Proprietary vs. Open Source Software ■ Proprietary: software that is the property of the maker and can be used by the purchaser/customer but only with certain restrictions. It can’t be reproduced, modified, or resold by the customer. ■ Open source: software that allows the user to modify the program structure/ computer code. Users may distribute the modified version. 9