Operating System Overview

Transcription

1 Agenda Open forum Identify subjects for breakout groups and later meetings Main presentation Tea and coffee break (3.30pm) Breakout into smaller groups

2 Topics to Cover Operating system and applications overview; Applications or programs; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

3 Topics to Cover Operating system and applications overview; Applications or programs; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

4 Operating System Overview The operating system is the software heart Applications It joins applications to hardware Windows, MAC OS, OSX, Unix, Linux, Android, etc all do the same job Operating System CPU Memory Devices Printer Disk Drive

5 Applications (Programs) The things you use Word processor, Spreadsheet, Skype, Photo editor, Video editor, , Genealogy app, Browser, etc. Applications Operating System CPU Memory Devices Printer Disk Drive

6 Topics to Cover Operating system and applications overview; Applications or programs; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

7 Applications or Programs Programs provide usable functionality Word processors Spreadsheets Photo management Photo and video editing Browsers

8 How Programs Work Together Programs share functionality. They can use each other's code. The Operating System provides: Keyboard access Screen display Network access Printer access Disk access Word Processor Spell checker One application can use another's functions libraries, plug-ins, extensions. Browsers call on Search Engines, Spell Checkers, Video Players, Audio Players, etc.

9 Topics to Cover Operating system and applications overview; What an application or program is; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

10 Folders and Files Model Hard drive = filing cabinet Folders = drawers Files = documents Think 'Tidy' Car Hobby Utilities Tax My returns U3A My presentations Videos

11 Files and Folders Basic Each User has their own area Only users with admin rights can see everything Data files are of different types, eg: aaa.txt bbb.doc ccc.bmp ddd.jpg Macs do not use a file suffix to show the file type Use My Computer or My Documents to open the File Manager

12 Files and Folders Selection Select a single file by clicking on it Select several files: Click on the first <Ctrl> click on the others Select a block of files: Click on the first <Shift> click on the last Either Drag and Drop or <Ctrl>C and <Ctrl>V to copy them

13 Topics to Cover Operating system and applications overview; What an application or program is; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

14 Simple Short-cuts (All PCs) Link to Microsoft shortcuts page Shortcut Function CTRL +A Select All CTRL +C Copy to paste board CTRL +X Cut to paste board CTRL +V Insert at cursor CTRL +B Bold CTRL +I Italics

15 More Editing Short-cuts Shortcut CTRL +Right Arrow CTRL +Left Arrow Function Move cursor one word to right Move cursor one word to left CTRL +SHIFT +Right Arrow Select word to right of cursor CTRL +SHIFT +Left Arrow CTRL +Z CTRL +Y ALT +F4 CTRL +S Select word to left of cursor Undo last action Redo last action Close window or application Save file

16 WinKey Short-cuts Win+D shows the desktop, or restore hidden programs when pressed a second time. Win+E opens Windows Explorer. Win+F opens Find files and folders. Win+M minimizes all windows. Win+ Shift+M restores windows that were minimized with Win+M. Win+R opens the Run dialog box. Win+U runs Utility Manager. Win+Pause or Win+Break opens properties of My Computer. Win+F1 opens Windows Help. Win+CTRL+F opens Find computers. Win+Tab cycles through taskbar buttons.

17 Topics to Cover Operating system and applications overview; What an application or program is; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

18 Adding a New User Allows the new user separate access to files and applications Each user has their own workspace Only the Admin can access everywhere... You should have two accounts: Admin use only when necessary User for general use Give guests (grandchildren) their own log in They can then play without affecting your setup, files and data

19 XP Adding a New User Non network example... You must have a computer administrator account on the computer to add a new user to the computer. Open 'User Accounts' in Control Panel. Click 'Create a new account'. Type a name for the new user account, and then click 'Next'. Click 'Computer administrator' or 'Limited', for the type of account you want to give to the new user, and then click 'Create Account'.

20 XP Adding a New User

21 XP Adding a New User

22 Topics to Cover Operating system and applications overview; What an application or program is; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

23 Virus Warning Validity Check warnings on these sites:

24 Topics to Cover Operating system and applications overview; What an application or program is; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

25 Avoiding Unwanted Applications Read the screens Don't just click Do you want Google Chrome? Read everything!!!

26 Topics to Cover Operating system and applications overview; What an application or program is; Folders and files; Keystroke short cuts; Adding a new user; Checking whether virus warnings are genuine; Avoiding unwanted applications; Avoiding being tracked.

27 You ll never be alone Google, Yahoo and Bing 'Track', 'Target' and 'Bubble' you. They: Tune your search results to what they know about you Send you annoying adverts Limit the results to your searches Avoid this with Firefox or Chromium and the DuckDuckGo search engine: Firefox settings DuckDuckGo settings

28 Tracking 1 When you search Google, Yahoo or Bing: Your search term is also sent to the requested site Unless you take precautions it will also be sent to other sites. You will be tracked Check your browser with Panopticlick

29 Test Results

30 Tracking 2 Who cares about which sites they visit? Many sites have third-party ads, and those thirdparties build profiles about you, so they can follow you. Your profile can also be sold, so if you had a cold sore and looked up 'herpes', your insurance might go up. Your searches are saved by Google, and may be legally requested. The same applies to your .

31 Firefox Search Engines You can add any search engines you like Click on Manage Search Engines to change the order or delete the unwanted

32 DuckDuckGo Firefox will check that you really want to install duckduckgo

33 Tracking 3 Bubbling is when your search history is used to promote what you like, and demote what you do not like. Different people get different results.

34 Firefox - Security If you share a PC with your dearly beloved and don t want them to know what birthday present you have bought them, use the Privacy setting.

35 Firefox Add-ons Enter search term here Choose here

36 Firefox Add-ons Install Disconnect first, then restart Firefox

37 Firefox Set Up 1 Set home page here Block pop-ups here This is in Windows XP

38 Firefox Set Up 2 Set No tracking here Block dangerous sites here Set master passwords for auto completion here

39 Firefox Master Password

40 Conclusion To optimise your security: Use your browser features Tune the features for optimum convenience Use a non-tracking search engine Use an https enforcer to maximise encrpyted links Use a tracking blocker like Disconnect Use an on PC adblocker like Ublock Origen Use Lightbeam to see how successful it all is Some sites may stop working, but the measures can be reduced to make them work again