1 / 14

Mr C Johnston ICT Teacher computechedu.co.uk

BTEC IT Unit 02 - Lesson 06 Computer Software. Mr C Johnston ICT Teacher www.computechedu.co.uk. Session Objectives. Understand the role of the Operating Systems and common examples, Know the differences between CLI and GUI operating systems, Understand the role of device drivers,

lindley
Download Presentation

Mr C Johnston ICT Teacher computechedu.co.uk

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. BTEC IT Unit 02 - Lesson 06Computer Software Mr C Johnston ICT Teacher www.computechedu.co.uk

  2. Session Objectives • Understand the role of the Operating Systems and common examples, • Know the differences between CLI and GUI operating systems, • Understand the role of device drivers, • Know different types of utility software that are used to keep computers systems running smoothly.

  3. Software Overview • A useful way of looking at the types of software used in a computer is: Applications and Utility Software Operating System Device Drivers BIOS Hard ware

  4. Operating System • Provides two classes of service: • Provides access to the computer hardware and peripheral devices, • Provides an Application Program Interface (API) so application software can be displayed, print, communicate with the world and store data. • The operating system includes a number of accessory programs which offer machine and peripheral management, security and file management. • Two types of operating system: • Command Line Interface (CLI) • Graphical User Interface (GUI)

  5. CLI Characteristics • Text based interface with a command prompt, • The user types in instructions at the command point using a keyboard, • The operating system then responds to the commands keyed in, • When the instruction had been processed doing the command prompt would reappear ready for the next instruction, • A high level of knowledge is required to remember and construct the commands.

  6. GUI Characteristics • Graphical based interface made up of WIMPs – Windows, Icons, Menus and Pointers, • Users enter commands by clicking on an option in a menu, pressing a button or completing boxes on a form, • The interface is far more user-friendly and it opened up the use of computers to people who had not learnt how to program a computer or can’t remember a lots of commands.

  7. CLI vs GUI

  8. Common Operating Systems • UNIX – Command Line • DOS – Command Line (PC-DOS – IBM, MS-DOS – Microsoft) • Linux – Command Line - Ubuntu – GUI • Windows 95, NT, 98, ME, 2000, XP, Vista, Windows 7 • Novell Netware – Command Line With GUI Applications • Windows NT, 2000, 2003, 2008 Server – GUI • MAC OS – classic version 1984 - 2001 • MAC OS X – first stable release 2001, current version v10.7 (Lion)

  9. OS Choice Factors • Does the operating system let you customise what you see on the screen and how you interact with the computer? • Does it provide support for connectivity of portable media? • What provisions are there to ensure tight security of the computer system? • What guarantees do you have of stability and reliability? • How easy is it to manage the computer system? • What utilities are included? • How much does it cost? • What after sales support is on offer for the user?

  10. BTEC Book – Unit 02 p14/15

  11. Device Drivers • In order for the OS to function correctly it must be able to communicate with all hardware devices attached to the computer, • A device driver are instructions for the OS on how to communicate with each device, • In order for a piece of hardware to work properly its own driver needs installing – it also must be the correct version for the operating system you are running, • In windows you control device drivers within device manager – part of the control panel

  12. Task 2[P2, M1] • You need to make notes about the tasks which operating systems enable us to do and compare different operating systems within perhaps a table. • Features and functions to discuss include: • machine and peripheral management, security, file management, device drivers, ability to customize, support for connectivity of portable media, stability and reliability, ease of management, associated utilities, cost and support for the user P2 - Explain the purpose of operating systems M1 - Compare the features and functions of different operating systems • For P2, you should outline the basic functions of operating systems in general, explaining how they are used to facilitate users. • For M1, you must review the features and functions of different operating systems. Learners will need to present a comparison of selected operating systems, summarising their respective strengths and weaknesses in context.

  13. Expansion -

  14. Operating System Features • General features • Random screen shots • First released • Current version • Cost / Availability • Architectures supported • Minimal hardware requirements • GUI / Command line • Customisable GUI • Target system type • File systems supported • Installation overview • International support • User friendly for lay users • Security features provided • Integrated firewall • Encrypted file systems • Security threats • Stability and reliability • Kernel type • Connectivity of portable media • How easy is it to manage the computer system? • Included utilities / apps • What after sales support is on offer for the user?

More Related