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Starting up the computer 3 . 1 Starting up the computer

Starting up the computer 3.1.1 Cool boot The start-up of a computer from a powered-down, or off state. Also called a hard boot. Contrast with warm boot, restarting a computer via the operating system. Starting up the computer

Starting up the computer 3.1.2 Warm boot A warm boot is sometimes necessary when a program encounters an error from which it cannot recover. On PCs, you can perform a warm boot by pressing the Control, Alt, and Delete keys simultaneously. Also called a soft boot. Contrast with cold boot, turning a computer on from an off position. Starting up the computer

3.1.3 Booting the computer with a diskette A boot disk will allow you to boot off of a diskette instead of your hard drive. This diskette can be used to fix error which may arise during the lifetime of your computer. To help load MS-DOS games or games you may not be able to run from Windows or MS-DOS because of high memory requirements. Starting up the computer

Operating input/output devices 3 . 2 Operating input/output devices

3.2.1 Visual display unit (VDU) Visual display is just the monitor. Disadvantage of using a monitor is its radiation. LCD is free of radiation. Operating input/output devices

Operating input/output devices 3.2.2 Keyboard Keyboard is the most traditional input device that can be found in the market. Other than inputting words, keyboard can do some special commands. E.g. Alt+character to open the corresponsive program or file. E.g. Tab+Shift to exchange between programs. Operating input/output devices

Operating input/output devices 3.2.3 Mouse Example of pointing device. It’s used to input data about the position on the screen of a computer system. Point and click are usually used to describe their functions when used in a graphical environment like operating system of Windows family. Operating input/output devices

Operating input/output devices 3.2.4 Printer Print a hard copy for backup. Function: Loading paper Print on envelop,label,letter etc. Operating input/output devices

3.2.4 Printer- Print Properties dialog Paper size Select the paper size (e.g. Letter, Legal). Paper Type Select the paper type (e.g. Normal, High Quality, Draft Orientation Select either Portrait or Landscape Paper source Select the paper source (e.g. Auto, Upper, Envelope, etc.). Resolution Changes the DPI (e.g. 75, 150, 300). Operating input/output devices

Operating input/output devices 3.2.5 Scanner It’s for inputting images or characters into the computer system. With suitable software, like optical character recognition(OCR), images read in may be turn into text. Operating input/output devices

3.2.5 Scanner- Scan Properties dialog Image type E.g jpg,bmp Colour E.g 42-bits,24-bits Size E.g A3,A4 Resolution Changes the DPI

Changing the settings You can change the settings of the input/output devices in the Control Panel.

Using an operating system 3 . 3 Using an operating system

Using an operating system 3.3.1 To create a new folder 1.Double-click My Computer, and then double-click the drive or folder in which you want to place the new folder. 2.On the File menu, point to New, and then click Folder. 3.Type the name of the new folder, and then press ENTER. Using an operating system

3.3.2 To rename a folder or file 1.right-click the folder or file in which you want to rename. 2.choose RENAME in the menu 3.Type the new name of the folder/file, and then press ENTER. Using an operating system

3.3.3 To delete a file or folder 1.Double-click My Computer. Click the file or folder you want to delete. 2.On the File menu, click Delete. Using an operating system

3.3.4 To move or copy a file or folder 1.Double-click My Computer. Click the file or folder you want to move or copy. 2.Click Edit. To move the file, click Cut. To make a copy of the file,click Copy. 3.Open another folder where you want to place the file, click Edit, and then click Paste. Using an operating system

3.3.5 to recover deleted files double-click Recycle Bin on the desktop right-click the file you want to retrieve click Restore. Using an operating system

3.3.6 To search for a file or folder To specify additional search criteria, click Search Options, and then click one or more of the following options to narrow your search: Select Date to look for files that were created or modified on or between specific dates. Select Type to look for files of a specific type, such as a text or WordPad document. Select Size to look for files of a specific size. Select Advanced Options to specify additional search criteria. Click Start, point to Search, and then click For Files or Folders. In Search for files or folders named, type all or part of the file name or folder you want to find. In Containing text, to search for files containing specific text, type the text you want to find. In Look in, click the drive, folder, or network you want to search. Click Search Now. Using an operating system

3.3.7 display file information 1.right-click the file that you want to display the information 2.choose PROPERTIES 3.click SUMMARY tab to view the file information Using an operating system

3.3.8 change file attributes 1.right-click the file that you want to change the file attributes 2.choose PROPERTIES 3.tick the attribute checkbox to change the file attributes 4. press OK Using an operating system

Using an operating system 3.3.9 to backup files make copies of the files onto floppy disks, magnetic tapes or optical disks The backup file can help to recover the original file if the original file was destroyed. Using an operating system

Using an operating system 3.3.10 CR EATING A BATCH FILE To create a basic batch file first open a MS-DOS command prompt and follow the below instructions: At the MS-DOS prompt type edit test.bat and press enter. If typed properly you should now be in a blue screen within the blue screen type: pause dir c:\windows dir c:\windows\system Once the above three lines have been typed in the blue screen choose file and choose exit, when prompted to save click yes Once you are back at the MS-DOS prompt type test. When enter is pressed, this should execute the test.bat file and begin running the file. Because the first line is pause you will first be prompted to press a key. Once you press a key the batch file will run line by line in this case listing the files in the windows and windows\system directory. If you wish to add more lines to this batch file you would simply type "edit test.bat" to edit the file again. Using an operating system

Using applications packages 3 . 4 Using applications packages

Install a software

Opening, Closing, and Switching Between Programs There are two ways you can open a program in Windows. 1. You can select the program from your Programs menu. 2. Or, if you know the name and path of the program you want to start, you can use the Run command to start it. To open and close a program from the Programs menu 1.To start a program, click the Start button, and then point to Programs. 2.Point to the folder containing the program that you would like to open, and then click the program name. 3.To quit the program, click the Close button in the upper-right corner of the window.

To open and close a program using the Run command 1.Type the name or click the program that you want to open. When you use the Run command, you can often specify just the name of the program instead of the full path. 2.To see items that you typed previously, click the arrow in the Open box. 3.To quit a program, click the Close button in the upper-right corner of the window. You can run many programs at the same time, and switch easily between them by using the taskbar. The taskbar contains a button for each open folder or program on your computer. You must already have the programs open in order to view them on the taskbar.

To switch between programs Click the taskbar button representing the open program or folder that you want to switch to. The program's window then appears in front of the other windows on your screen.