Computer devices


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Computer devices

  1. 1. Control Computer devices
  2. 2. Starter <ul><li>Put the following instructions into the correct order. </li></ul>Get the bread and the butter Butter the bread Eat the toast Put the bread in the toaster Get the butter knife You have 5 minutes
  3. 3. Lesson Objectives <ul><li>Understand how computers can control things </li></ul><ul><li>Identify computer devices </li></ul><ul><li>Be able to sequence a set of instructions </li></ul>
  4. 4. Learning Outcomes <ul><li>Starter – Put the instructions in order </li></ul><ul><li>Task 1 – Order the Car Park Instructions </li></ul><ul><li>Task 2 – Write a set of instructions for making tea </li></ul><ul><li>Task 3 – Sort the input and Outputs of a computer system </li></ul><ul><li>Task 4 – Match the Cause with Effects </li></ul>
  5. 5. What is Computer Control? <ul><li>Computers are capable of controlling many other devices. </li></ul><ul><li>Device control / Peripheral devices (devices linked to your computer) such as your printer and speakers are controlled directly by your computer by sending it signals . </li></ul>
  6. 6. Computer Systems <ul><li>Control systems are part of everyday life. They are all around us. </li></ul>
  7. 7. Computer Control <ul><li>Computers control devices all around the house for instance, </li></ul><ul><ul><li>microwaves </li></ul></ul><ul><ul><li>washing machines </li></ul></ul><ul><ul><li>televisions </li></ul></ul><ul><ul><li>video recorders </li></ul></ul><ul><ul><li>electronic games. </li></ul></ul>They may be doing work for you such as starting or finishing at a set time. They may control time, power, electric motors and so on, in the following devices!
  8. 8. Computer Control What is being controlled at this car park?
  9. 9. Task 1 – Put these instructions in order You have 5 minutes
  10. 10. <ul><li>There are two types of instructions: </li></ul><ul><ul><li>Instructions with assumptions </li></ul></ul><ul><ul><li>Precise step by step instructions </li></ul></ul>Instructions All instructions needs to be easy to understand
  11. 11. <ul><li>Some instructions are not very precise: </li></ul><ul><li>e.g. Get the book from the table </li></ul><ul><li>because some details are not needed such as: </li></ul><ul><li>How far the table is? </li></ul><ul><li>What the table looks like? </li></ul><ul><li>What the book looks like? </li></ul>Assumptions
  12. 12. <ul><ul><li>Precise instructions or step by step instructions need to be accurate otherwise things will not work </li></ul></ul><ul><ul><li>e.g. Recipe, flat pack furniture </li></ul></ul>Precise Instructions
  13. 13. <ul><ul><li>Write a set of instructions for making a cup of tea </li></ul></ul><ul><ul><li>Using Word / Publisher create a leaflet with the instructions </li></ul></ul>Task 2 You have 15 minutes
  14. 14. Every system must have an input and an output . Input is signal going into the computer from an external device, such as your fingers on a keyboard or your voice via a microphone. Output is when the computer makes a peripheral (outside) device to do something, such as speaker produces sound or a printer prints a document. System Inputs & Outputs
  15. 15. System Inputs & Outputs
  16. 16. Task 3 Match the cause with the effect You have 3 minutes
  17. 17. Extension
  18. 18. What can I remember? <ul><li>Computers are capable of controlling many devices. </li></ul><ul><ul><li>Precise instructions or step by step instructions need to be accurate otherwise things will not work </li></ul></ul><ul><li>Every system has an input and an output . </li></ul><ul><li>For every cause there is usually an effect . </li></ul>Plenary