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  1. Intro to R001Understanding Computer Systems The examined Unit

  2. Contents LO1 LO2 Data Capture Methods • Overview • Introduction to computer systems • System Input and Output Devices • System Software • Application Software • Storage and Connectivity • Assistive Technologies

  3. Overview • This Unit is broken down into 4 learning Objectives (LO1) • Understanding how ICT can be used to meet business needs • Knowing how to work with information and data to meet specific business needs • Knowing how ICT can be used to support business working practices • Understanding how legal, ethical, safety and security issues affect how computers should be used

  4. LO1: Understanding how ICT can be used to meet business needs

  5. Activity 1- Independent Learning Task • Use the worksheet provided to recap what we have covered so far • Answer the questions on the sheet • You may use the internet to help you

  6. Topics covered in LO1 • Introduction to computer systems • System Input and Output Devices • System Software • Application Software • Storage and Connectivity • Assistive Technologies

  7. Introduction to computer systems • Aims : • To understand the difference between portable and desktop devices • To identify and explain scenarios where these would be best used

  8. Desktop devices • What is a desktop device? • These are electronic devices that remain in one place • Examples: • Desktop computers • Printers • Scanners

  9. Portable devices • What are portable devices? • These are electronic devices that can be carried easily • Examples • Laptops • Netbooks • Mobile phones • Tablets (Ipad, Android Tablet) • handheld consoles (PSPs) • Media players (eg iPods, mp3 or video players)

  10. Activity • Use presentation software to answer the following questions; discuss advantages and disadvantages. Include images • Explain why a sales person at Top shop may prefer to use a laptop rather than a desktop PC at work • Explain why doctorsat a hospital may prefer to use a tablet rather than a paper based chart • Explain why a games developer would prefer to use a desktop PC rather than a laptop or tablet to design games

  11. Exit Task • Write an exam question that you will give to another student about what we have learnt today • The question must be worth 3 marks or more example on next slide

  12. Example exam questions 6. Jane has the following activities that she needs to perform: • 21st March: 10am: visit Hallam’s Builders Ltd • 21st March: 11.30am: visit John Kelvin at home • 21st March: write report on investigation into noise pollution (need two hours) • 22nd March: email report to my manager. (a) What type of software is most suitable to help Jane organise these activities? …………………………………………………………………………………………………………..[1] (b) Explain two reasons why the software you have chosen is suitable for this purpose. 1……………………………………………………………………………………………………….. ………………………………………………………………………………………………………….. 2……………………………………………………………………………………………………….. ………………………………………………………………………………………….. [4]

  13. System Input and Output Devices • Aims: • Understand the different categories of devices • Identify specific devices for each category • Know the different types of printers, their advantages and disadvantages

  14. System Input and Output Devices • On a new page in your books write the headings • Date: Wednesday October 2nd • Topic: System Input and Output Devices • Class work/Notes

  15. System Input Output and Storage Devices • Hardware are the physical components of a computer • The fall under four categories • Input • Output • Storage • Processing

  16. Computer System A computer system has Input, Output & storage devices

  17. Input / Output: How it works Input Output

  18. Input/output/Storage INPUT OUTPUT STORAGE Open the EGA ICT Wiki Under R001 – Theory – Open the Device Sort PowerPoint

  19. Answers INPUT OUTPUT STORAGE

  20. Input Devices • An input device is used to put data into a computer system • Some examples include • Keyboard • Mouse • Joystick • Microphone

  21. Input Devices • Which Input Device would be most suitable for the following tasks? • Surfing - clicking on links, icons • Recording a song • Writing a letter • 'Face to face' communication • Capturing photos for editing

  22. Output Devices • An output device is used to receive data from a computer system that has been processed- information • Some examples include • Monitor/screen • Speakers • Headphones • printer

  23. Storage Devices • A storage device is used to store files such as photos, movies, music, documents, etc • Some examples include • CD ROM • DVD ROM • USB • External Hard Drive • Desktop Hard Drive • Floppy Disks • Magnetic Tape

  24. Storage Capacities • Some storage devices have a lot more capacity than others. • The floppy disk which is now obsolete could hold 1 .44 megabytes (MB) of data. • Today the average USB drive can hold 4-8 Gigabytes (GB) of data. Top Tip: A 1GB flash drive can hold up to 476 photos or 238 mp3s or up to 2 movies.

  25. Can you find? • What is the maximum storage capacity for... • CDs, • DVDs • Blu-Ray Answers CD - 700MB DVD - 4.7GB (4,812.8MB) Blu-Ray- 25GB (25,600MB

  26. Optical, Magnetic and Solid State Storage • Different storage devices use different methods to save data • The Four main methods are • Optical • Magnetic • Solid State • Cloud Storage

  27. Optical Devices • More memory on a disk means more information of image sound can be added to a disk. • Refers to using an optical device such as a CD or DVD to store data. Data is written using a laser The difference in capacity between a CD, DVD & Blu ray is affected by the thickness of the laser. As technology has got better it has been possible to write onto a disc with a thinner laser meaning more information can fit onto a disk. This explains why the resolution of images on a BLU RAY disk is much better than on a DVD

  28. Magnetic Devices • Magnetic media uses magnetic patterns to represent information. • E.g VHS • Magnetic Tape • Floppy Disks • Cassettes • They are still used in some computer hard drives to store data but no one really uses them for films or music anymore

  29. Solid State devices • SSD drives are a new thing replacing the standard magnetic hard drives which had mechanical parts which often failed. Hard Disk Drive with Moving Parts Solid State Drive with No Moving Parts memory Chips only check out this video for more info http://www.youtube.com/watch?v=rjCmLJtITK4&NR=1&feature=endscreen

  30. Cloud Storage

  31. R001- Pop Quiz • Answer the sample exam questions

  32. Printers • Research • What 3 types of Printers exist? • Fill in this table in your books

  33. Fill in the table on your books

  34. Systems Software

  35. Do Now: What is System Software? • Open the egaict wiki (egaict.wikispaces.com) • Save this file: • R001 -> Theory -> System Software Worksheet • Research and answer the question in your own words: • Find the definition of System Software.

  36. System Software • Aims: • To know the definition of system software • To understand different types of system software • To be able to identify different types and name features of system software

  37. Definition of System Software • System software refers to the operating system and all utility programs that manage a computer. www.webopedia.com/TERM/S/systems_software.html

  38. Types of System Software • Operating System • (Windows, Mac OSX, Android etc) • Utility Software • Anti-Virus Software • Disk Cleaners • File Managers • Screensavers • Disk defragmenters • File encryption software • Backup Software • Archiving Software • Drivers and Firmware Can you name any examples?

  39. Main Task: System Software • Research on the table on your worksheetdifferent types of system software. • Some examples have been given to you • State what type of system software they are • Explain why it is used • Identify who creates the software • Give 3 features • Extension: Find more examples of system software • Operating System • (Windows, Mac OSX, Android etc) • Utility Software • Anti-Virus Software • Disk Cleaners • File Managers • Screensavers • Disk defragmenters • File encryption software • Backup Software • Archiving Software • Drivers and Firmware

  40. Independent Learning Task • A small business has just ordered some new computers for their office. • The manager, Ms Smith, has heard of ‘System Software’, but is unsure what it means. • Write a letter to Ms Smith explaining what System Software is and what system software you recommend she should use on the new computers. • Include reasons why

  41. Plenary • Give an example of System Software that you use on your computer, phone or tablet

  42. Applications Software

  43. Do Now: Application Software • Copy the definition into your book. Application software is software that causes a computer to perform useful tasks beyond the running of the computer itself. Software applications are often called programs, applications or apps. • Write down some examples of application software that you know. Date: 16th October 2013 Topic: R001-understanding computer Systems (theory)

  44. Application Software • Aims: • To know the definition of application software • To understand different types of application software • To be able to select the best software for different use case scenarios

  45. What is Application Software? • Open the egaict wiki • egaict.wikispaces.com • Go to: • R001 -> Theory -> Application Software Worksheet • Click on download and save this file

  46. Types of Application Software • Presentation software • Photo-editing software • Video-editing software • Graphics manipulation software • Communications software • Social networking • Chat rooms • Instant messaging • Email • File transfer/file sharing • Word processors • Desktop publishing software • Spreadsheets • Database management software • Multimedia software • Gaming software • Web browsers • Apps for portable devices

  47. Task: Application Software

  48. Plenary: Application or System Software? • In your book explain the difference between Systems(WHICH WE COVERED LAST WEEK) andApplication software. • Swap books and read the other person’s description • Do you agree with what they have said? Is there anything that they could have added?

  49. Storage and Connectivity

  50. Storage and Connectivity • Connectivity • How you can connect to a wireless network • How to keep your network save • how peripherals can be connected a computer • How GPS tracking can be used •Storage • You need to know the different types of storage mediums • Their advantages and disadvantages