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programs. Specific Achievement Objectives This topic will help students to: The relationship among operating systems, application programs, and user files Understand more on the relationship At the end of this section, students will be able amongst operating systems, application to: programs and user files. (a) Identify different types and features of common operating systems operating system, application programs for computers.. and peripherals. (b) Understand more on the data files created by various application software. Describe the flow of data among the Distinguish between an operating system, application programs and data files. (c) State the data files and their corresponding application programs. Expected Prior Knowledge (d) Understand that the installation of application Able to open file and save file in programs requires an operating system. Microsoft Word, Excel, Access and PowerPoint. Able to discuss in the Web discussion Common operating computers systems for group. Able to surf on the Web. At the end of this section, students will be able to: Suggested Teaching Duration (a) Identify different types and features of operating system, such as: 5 periods Content of This Topic The sections in this topic are: The relationship among operating systems, application programs, and user files. Common operating systems for computers (I) Windows 98 (II) Windows NT (III) Windows 2000 (IV) Mac OS (V) Novell's Netware (VI) Unix (VII) Linux (VIII) Windows CE (b) Data files created by various application Select appropriate operating systems for different scenarios. 2.2 - 1 Different files created by various application programs At the end of this section, students will be able to: (a) Distinguish different types of data files created by various application program Students pretend to start a small company. by file extension: They are required to select an appropriate Word processing, text file .doc, .rtf, .txt Spreadsheet software .XLS, .WKS operating system for the company. A debate is to be held in class about the appropriate selection. After the debate, students should answer the questions in the project worksheet. Presentation Graphics .ppt Pass Database software .dat, .dbf and .mdb To achieve a pass, students should demonstrate considerable effort and skill in some areas. Teachers should use their professional judgment to decide what is a reasonable expectation of students and whether the stated quality and sufficiency requirements were met. Students should produce brief but clear notes to explain the choice of operating system. Students should base on the compatibility, price and expertise of personnel to make their choice. Students should show that they are well prepared for the debate. Merit To achieve a merit, students' work should be of good quality and must clearly and accurately explain their choice. Students should show understanding of different operating systems. They should show that they have sufficient knowledge to comment on operating systems other than their choices. 2.2 - 2 The appropriate wording and tone for the debate is required. Distinction This topic focuses on the basic understanding To achieve a distinction, students should give of relationship amongst operating systems, sensible answers for the questions on the application programs and data files. project requirement worksheet. The explanation for and dependence The amongst alternation of their choices and forecasting of operating systems, application program and their choices should be supported by sensible data files are also the objectives of this topic. reasons or evidence. Students should The core concern of this topic is to identify and demonstrate that they can work independently to use different operating systems of a to produce their work to agreed deadline. computer appropriately. Students should have checked the validity and accuracy of their work and information Assisted by the Animation 2.2.1, teachers can selected. demonstrate the data flow among operating systems, application programs and peripherals. The generation of data files is also introduced here. Teachers should explain more about the role of operating systems and application programs with the help of the animation. 2.2.1 Teachers can use Photo2.1.1a to motivate students. Teachers can ask what is shown in the photo. Through the discussion, teachers should correct the students who give application programs as their answers. The teachers should emphasize that the picture shows an operating system. In activities 2.1.1, it asks students to distinguish different types of operating systems and application programs. Teachers are suggested to spend 10 minutes in this activity. 2.2 - 3 In order to know more about different types of "Menu Bar→ View→ Detail" to view the operating systems, file type of each file. Moreover, students should select Menu Bar→ View→ options students are asked to search on the Internet, stick a piece of information from the Internet or a newspaper cutting about the given operating system on the worksheet of activity 2.2.2. 2.2.2 and deselect "hidden file suffix of the file". Teachers are suggested to spend 40 minutes in this activity. Teachers can use the interactive simulation program 2.2.3a to consolidate what the students learnt in this topic. In the game, students should drag and drop the name of In order to know more about different types of operating systems, students are asked to search on the Internet, stick a different types of operating system, application software and data files. For incorrect sequence or misuse of software, piece of information from the Internet or a newspaper cutting about the given operating system on the worksheet of activity 2.2.2. an alert message will be prompted out to guide students to go to the appropriate way. Teachers are suggested to spend about 20 to 30 minutes in this activity. Students are asked to fill in the comparison table about different features of various A scenario of starting a small company with several different types of personal operating system. If the information that students searched are not sufficient enough, teachers can advise students to go to the corresponding operating discussion group and ask for the solution. Teachers are suggested to spend 40 minutes in this activity. computer is given. Students are required to select an appropriate operating system for the company. A debate among different groups is to be held in the class after one-week preparation. Each group should give reasons to support their choice. After their discussion students are required to answer the questions given in the project sheet. 2.2.3 In this activity, students are asked to create different files by different application software and use the window explorer to investigate the file type of each file. Teachers should remind students to select Teachers can use the enrichment discussion questions to discuss some advanced knowledge in the class. 2.2 - 4 operating system recognizes a new device and assists in its installation. 4. Describe Memory management of the operating system. 1. Differentiate between an operating system and an application program. The operating system assigns the operating system kernel, application program instructions, data, and intermediate results to An operating system is a combination of areas of memory. Data that has just been read programs that coordinates the actions of a into memory or is waiting to be sent to an computer, including its peripheral devices and output device is stored in areas called buffers. memory. It enables people to control the At least some portion of memory is allocated movement, storage and retrieval of data and for fixed areas called partitions, which are information. An application program consists used to store the operating system and of several programs working together. programs and their related data. Virtual memory management increases the amount of 2. Describe the process management of the operating system. memory by using a set amount of disk space to store items during processing, in addition to the existing memory. In operating system terms, a process is a program or part of a program that can be executed separately. Single tasking operating systems allow only one user to run one program at a time. Multitasking operating systems allow the computer to work on more than one process at a time. 3. Describe input and output management of operating system. The operating system manages input and output processes differently depending on the device. Spooling increases both CPU and printer efficiently. The operating system uses programs called device drivers to communicate with each input and output device. With Plug and Play technology, the 2.2 - 5 2.2.1(Page 1) Time allowed: 10 minutes Equipment: A personal computer Description Students should distinguish the following software in the categories of operating systems and application programs. A picture is shown on page 2. Something is hidden in the picture. Students are required to distinguish whether the given software is an operating system or application programs. Each numbered polygon represents one software. If the software represented is an application program, students are required to paint it black. If the software represented is an operating system, students are required to paint it blue. Question 1 has been done as an example. 1. 3. 5. 7. 9. 11. 13. 15. 17. 19. Microsoft Word Microsoft Excel WinZip Lotus 1-2-3 Norton Anti-virus Windows 98 Paintbrush Unix Photoshop Dreamweaver 2. 4. 6. 8. 10. 12. 14. 16. 18. 20. Microsoft PowerPoint Linux Microsoft Access Microsoft NT Internet Explorer Netscape Communicator Mac OS Novell Netware Windows 2000 Flash 2.2 - 6 2.2.1(Page 2) Name: ____________________________________ Class: _________________________(__________) Date: _____________________________________ Something is hidden in the following picture. Try to find it out! If the software represented is an application program, paint it black. If the software represented is an operating system, paint it blue. Question 1 has been done as an example. What have you seen? _________________________________ 2.2 - 7 2.2.2(Page 1) Time allowed: 40 minutes Description Part A Students should search on the Internet or a newspaper cutting about one of the operating system. Stick the piece of information in the space provided in page 2 Part B Students should fill in the comparison table for different operating systems with word given. One word can be used more than once. Students can go to corresponding Web sites or newsgroup to find the solution 2.2 - 8 2.2.2(Page2) Name: ___________________________________ Class: ________________________(__________) Date: ____________________________________ Part A Stick the piece of information here! 2.2 - 9 2.2.2 (Page 3) Fill in the correct word for the relevant operating system. Note: one word can be used more than once. Multi-user, Runs on Apple Macintosh computers only, For Handheld computing devices, User and account system security, Network OS, Text-base user interface. Graphical user interface, Free of charge, Single-user, Runs on all kinds of computers, OS Features Windows NT Windows 98 Mac OS Linux Unix Novell Netware Windows CE 2.2 - 10 2.2.3(Page 1) Time allowed: 40 minutes Description Students are requested to create different files with various application programs. Open Microsoft Word, type several words and save as (a) Word document (b) Text file (c) RTF file With name file1,file2 and file3 respectively. Open MS PowerPoint, create one page of slide and save as (a) PowerPoint presentation (b) With name file4 Open MS Excel, create a spreadsheet and save as (a) Excel Spreadsheet (b) With name file5 Open MS Access, create a database and save as (a) Access database (b) With name file6 Open File Explorer. Select “Menu Bar View Detail” to view the file type of each file. Students select Menu Bar View options and deselect “hidden file suffix of the file”. Note the file suffix of the file created. 2.2 - 11 2.2.3 (Page 2) Name: __________________________________ Class: _______________________(__________) Date: ___________________________________ Write down file suffix for corresponding files File1:_________________ File2:_________________ File3:_________________ File4:_________________ File5:_________________ File6:________________ 2.2 - 12 2.2.1(Page 1) Time expected: 1.5 weeks Students are supposed to start a small company. The company uses several different types of personal computers. Students should decide the operating system that will be used with each computer. Based on the criteria of the company’s purpose, the expertise of personnel, the application software used and the need for compatibility, students should select an appropriate operating system. Students with same selection should be grouped together. After one-week preparation, hold a debate in class about the selections. Each group should give as many reasons as possible to support their choice. After the debate, answer the questions at page 2. 2.2 - 13 2.2.1(Page 2) Name: ___________________________________ Class: ________________________(__________) Date: ____________________________________ After the debate in class, answer the following questions. Question 1: After the debate, have you changed your selection? Why? __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ Question 2: Would it be different if you have made a choice five years ago? Why? __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ 2.2 - 14 Types of computer software The relationship amongst operating systems, application programs, user files via the supervisor, OS manages the CPU and directs other programs to perform tasks to support applications programs. The operating system keeps track of locations in main memory where programs and data are stored (memory management). The operating system then moves data and programs back and forth between main memory and secondary storage (swapping). Common operating systems for computers. Windows 98 It runs typically only for one user at a time. Despite the fact that these users might be different, the system on your bench handles only one request of a single user at a time, hence, is called single-user operating system Windows 98 (called "Memphis" during development and previously called "Windows 97" based on an earlier schedule) is a widely-installed product in Microsoft's evolution of the Windows operating system for personal computers. Windows NT Windows NT is the Microsoft Windows personal computer operating system designed for users and businesses needing advanced capability. Windows NT (which may originally have stood for "New Technology," although Microsoft doesn't say) are actually two products: Microsoft NT Workstation and Microsoft NT Server. Mac OS The Macintosh operating system (Mac OS) runs only on Apple Macintosh computers or Mac clones. Novell's NetWare NetWare is a popular network operating system(NOS) for coordinating microcomputer-based local area networks (LANs) throughout a company or a campus. 2.2 - 15 Unix Unix is a multitasking operating system for multiple users that has built-in networking capability and versions that can run on all kinds of computers Linux Linux is a Unix like operating system running on PCs and workstations. Its source code is open and Linux can be freely downloaded from Internet. Windows CE Windows CE is greatly slimmed-down version of Windows 95 for handheld computing devices. Data files created by various application programs Filenames used for the PC, but not for the Macintosh, have extension name, or three-letter tags, which are usually inserted automatically by the application software. These extensions are added on after a period following the filename. Word processing or Desktop publishing programs DOC Spreadsheet software XLS, .WKS Presentation Graphics .PPT Database software DAT, .DBF and .MDB Reference URLs: http://www.microsoft.com/windows Microsoft Windows System. http://www.apple.com Apple Computer Ltd. http://www.novell.com Novell System. http://www.linux.org Linux System. http://www.ugu.com Official homepage for Unix System Administrators 2.2 - 16