ECDL. Module 1 About Computers. questions at the end of a slide

Transcription

1 ECDL Module 1 About Computers 1. Listen to my presentation and ask questions at the end of a slide 2. In groups of two: Summarise my presentation and make your own presentation in your own words and present it to the class. 3. Inspirational video 4mins long

2 Information Technology Using computer systems to research, gather, store, compare, analyze data by businesses and people.

3 CH 1 About Computers Computer concepts and Types of computers Computer terms and uses of computers/history Computer Applications Hardware and parts of computers Memory Input and output devices Software Information Networks

4 Common Google and Microsoft similar competing Apps.

5 Concepts Of Computers Hardware = All the physical things of a computer, e.g. : keyboard, mouse etc. Software = Program used to run the computer, e.g. : Microsoft Windows, Office Apple, Android operating systems etc. Operating systems = e.g. Win 98, Win XP, Win Vista, Win 7, Win 8, Windows 10 Microsoft Office = Applications such as Word, Excel, Outlook, PowerPoint, Access databases

6 Hardware visuals

7 2.Types of Computers PC Personal Computer Smart phones Tablets Laptops and Mini Mainframe computers Smart Televisions ATM s Servers

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9 Key computer terms CD RW. Compact disk re write DTP? (PPT) DVD?, GUI? HTML?, HTTransferP? Light pen (Demo) WYSIWYG? URL? Cloud. This is space on a server or hosting company where you can save information and access it from anywhere using a username and password.

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11 Use of computers At home I pods, I Phones, anything automatic, remote controls, alarm systems etc. Internet on your personnel computer for shopping, looking for info, booking things, downloading things and selling things with your own website. IN BUSINESS Filing e.g. database management

12 USes of computers.

13 HISTORY OF COMPUTER

14 Computer Applications Operating systems are usually run by Microsoft like XP or Net 7 and the systems help to run the applications, software and programs. Application are those things found in Microsoft Office 2003 or Word Makes documents, tables etc. Spreadsheet- Microsoft excel is the most common app used when dealing with numbers, databases, accounts, charts etc. Presentations e.g. PowerPoint. Used to make fancy presentations for class like were using now.

15 Parts and Types Of Computers Mainframe computers are large computers used with large servers by banks and governments- left on 24 hours a day Servers or network computers are computers that manage support and protect a computer network 24 hrs a day and run and host websites Most types of computer need a system to run software off. Some use windows, some Apple and some google Android operating systems.

16 Hardware CPU (Central Processing Unit) Is The brains of the computer. The speed is measured in gigahertz. A billion pulses per second The part of the CPU are ALU ( Arithmetic Logic Unit) carries out the calculations on the computer Immediate access memory is where data used by ALU is saved. Control Unit = to help put instructions into the correct sequences

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18 -Central Processing Unit This is made up of a memory unit RAM Random Access Memory (for running programs at speed) and Hard drives (for saving files). Domoeggemegrottebyte are biggest then Terabytes, gigabytes, then MB, bytes,then bits. The cpu is the brains of the computer. It interprets and processes information. E.g. Intel Pentium. It is governed by a clock. Its made up of the ALU : Arithmetic Logic Unit (Does all the math's operations of the computer) Control Unit: works out the instructions of the computer. Memory unit: ROM Read Only Memory RAM Random Access memory

19 Memory RAM (Random Access Memory) : The main memory of a compute a.k.a working memory ROM (Read only memory) Program that is burnt onto computer chips at production stage. It can t be changed. If you have no operation system downloaded then the words that come up on the computer are from the ROM. Cache memory = special memory linked to the CPU. It stores data that is frequently used. e.g. : passwords and your details Hotmail, g-mail

20 Output devices Plotters = are printers, used by architects, used to make detailed drawings. LED s = Light Emitting Diodes. Light on your calculator, light on keyboard VDU s = Video display units They can be 14 to 24 in size The refresh rate is the number of times per second that the image is drawn on the screen LCD = liquid crystal display volts are applied to areas on the screen making crystal turn dark. Light is shun through the back panel into the crystal. TFT (Thin Film Transistor) Speech helper = This is software that makes text into speech, use for additional needs Speakers = make the noise louder or smaller Touch screen can be input or output device = e.g. sat nav.

21 Higher order Questions Explain what information technology is? List the types of memory? What types of computers are there? What does an operating system do? What's the difference between applications(apps) and operating system Discuss the differences between hardware and software and give e.g's Outline the differences between input devices and output devices and give e.g s! How might you set up and choose an operating system?

22 Software Systems software (e.g. operating systems: windows, Unix, apple mac) Operating System (Apple IOS)= saves and loads data and programs Memory management Message displays Password protection

23 Application software A program is written to do a certain job (e.g. word, excel) For doing accounts you may use accounting software of excel (e.g.. sage accounts or excel) GUI (Graphical User Interface) = this is the programming that makes windows, icons, menus, pointers. (e.g. wimp) Systems development = computer people analyse and design and develop a system (e.g. at the testing stage of MS they try to de-bug the problems then update OS.

24 Input & Output devices Qwerty keyboards Ctrl, Alt + 4 gives Mouse=moves the cursor around the screen Trackball=acts the same as a mouse but is shaped as a ball Touchpad=acts as a mouse but with your touch Light pen=infrared pen Scanners=copies words into your computer Joysticks= input control Microphones =allows speech to control the software and the actions of the computer Digital cameras=converts images onto your computer

25 5: Output Devices Plotters are printers used by architects used to make detailed drawings. LED s are light emitting diodes VDU s are video display units. They can 14 to 24 inches. The refresh rate is the number of times per second that the image is drawn on the screen. (hertz) LCD = liquid crystal display. Volts are applied to areas on the screen making the crystal turn dark. Light is shun through the back panel into the crystals. TFT = thin film transistor is an advanced type of LCD.

26 Information Networks LAN=local area network which links computers networks together Peer to peer=getting two computers to communicate together Clients sever network WAN=wide area network which is the same as LAN but much bigger e.g.. Worldwide WAN E.g. bank atm Intranet=internet but are owned by a private companies EG. Oracle Extranet=employees can access the network remotely from home Internet= is a network of computers around the world using phone lines, optic fibre cables, wireless, satellites WWW=world wide web which is the address that come up on the world internet. File Transfer Protocol=allows uploading and downloading of files onto website server WEB SERVER/Hosting company=company you can pay money to upload and maintain your website HTTP=hyper text transfer protocol=it helps connect you to the internet file needed Search engine= e.g.. Google= to find info and websites etc.

27 Computer Networks

28 Set up Modem= connects the computer to the telephone lines. Often a card plugged into the back of the computer. Uses digital signals. Or wireless through your TV company and then wireless Internet service provider= eir, sky, virgin media PSTN=public switched telephone network ISDN= was designed for transmitting digital rather than analogue signals CAT 5 Optic fibre cable e.g. Virgin Media

29 7: Graphical User Interface Use the programming that makes windows, icons, menus, pointers, e.g.. W.I.M.P. Systems development computer people analyse what's needed then develop the system e.g.. at the testing stage at Microsoft they try to debug the system.

30 Browsers A global network of computers Connected with telephone, modems, wireless and cabling. Internet Service Provider. Most well known is eircom. WWW means world wide web and it s a tool for accessing the web You also need a browser e.g. internet explorer 11 latest Google chrome is also a very popular browsers

31 Conclusions Differences between software, hardware, Operating Systems and Internet lines. Memory and parts of a computer Input versus Output devices Types of Software Computer networks Setting up your computer to the internet. Windows 10 changes Video link for windows movie maker

32 Questions Explain Memory types and examples Summarise what the CPU is and what does it do? Explain Applications and give examples What are computer networks and write down the different types How would you set up your home computer to the internet?

33 Further Win 10 research Learn more about Word 10 here windows min tutorial

34 Assessments for TY 07/01/2016 Weebly Presentations are due! Presentations to present next week so complete at home. 5 Web pages min and one web page called practice page where you have to present all 24 skills of weebly using the build functionality. E.g create a survey and relate it back to your global issue Also before Easter your tests will be to Present Scratch Video Game that you ve designed yourself Lastly you will need to present in front of your class all the coding work you have been doing in your class too before Easter for reports home. You will have time to reflect and Q&A after presenting.

35 About computers. Shorter version. By Mr Mc Garry

36 CH 1 about computers Concepts of computers Parts and types of computers Hardware Memory Input and output devices Software Information networks

37 Types of computers PC personal computer Smart phones Tablets Laptops and mini laptops Mainframe computes Smart TV ATM Servers

38 Key computer terms DTP desk top publisher DVD digital versatile disk GUI graphical user interface HTML hyper text mark up language HTTranserP hyper text transfer protocol WYSIWYG what you see is what you get URL uniform resource locator Cloud this is a space on a server or hosting company where you can save information and access it from anywhere using a username and password

39 Use of computers Looking for information Shopping online Booking things Downloading and selling things Making your own website Alarm systems

40 Input and output devices Input devices are things that go into your computer Example: mouse, keyboard Output from computers Example: speakers

41 What I need to get connected to the internet To connect to the internet I will need the following: A computer A modem/ phone line An internet browser (software) An account with a service provider (ISP) An ISP is the gateway to the internet it provides you with and access internet Some examples of ISP are: Windows 95, OS7 and OS8. The account will come with a username and password. The most common browsers are Microsoft internet explorer and Netscape navigator.

42 How to connect computer to Wifi Select the Network in the notification area. Choose the network that you want to connect to, and then click Connect. Type password Follow instructions if there is any that you haven t followed.