Form 4 Mid Year Examination 2003

1. What type of technology is used for the IAS?
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2. What does key to disk mean?
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3. What are two reasons why a business might decide to use a computer to process information?
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4. What is a Kimball tag?
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5. What is and advantage of using OMR?
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6. What is an advantage of using OCR?
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7. What is MICR and who is likely to use it?
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8. What is a bar code?
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9. What is a UPC?
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10. What is an ISBN?
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11. What is a magnetic strip used for?
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12. What is a direct input device?
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13. What are some different types of LCD screen available for laptops today?
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14. Describe the purpose of an actuator.
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15. What procedures would you recommend for making a back up of your home computer? What would you use to back up, what would you backup and how often? 
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16. What are some reasons why we would choose an inkjet printer instead of a dot matrix printer?
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17. What are laser printers suitable for?
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18. What might we use a plotter for?
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19. What are the three things we add together to work out the disk access time?
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20. What is the difference between main store and backing store?
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21. What is the difference between systems software and applications software?
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22. Describe the function of two operating system utility programs?
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23. What does debugging mean?
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24. What does an assembler do?
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25. In what ways are hard disks better than floppy disks?
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26. Why is a hard disk with fixed heads better than a hard disk with moving heads?
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27. What is serial access storage and what media is used for this purpose?
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28. Why would you choose to buy a small hard drive instead of a floppy disk drive?
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29. What type of storage device would you suggest for a network of microcomputers?
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30. What is remote sensing?
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31. Why are high level languages easier to use than low level programs?
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32. What is a turnaround document? Provide an example that you are familiar with
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33. Write down the names of three high level languages?
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34. What are the names of two low level languages?
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35. What is automated data capture?
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36. List three manual information systems that you might have in your home
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37. What is the difference between a CD-ROM and a CD-RW
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38. What is a control signal in a CPU for?
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39. What is a PDA
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40. What is an embedded computer
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41. What is the purpose of a web camera?
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42. What is CNC?
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43. How many bytes in a megabyte?
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44. What is a compiler?
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45. What is an interpreter?
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46. Banks use _____________ for data capture because it is extremly quick and diufficult to forge.
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47. What is the purpose of a sensor under the rtoad at traffic lights?
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48. What is magnetic media?
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49. What is optical media?
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50. What is CAM?
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51. Long answer question – 10 marks

Suppose you are responsible for automating a small business office. The office does some accounting work, produces documents like letters and reports and also is responsible for designing small commercial items like brochures, flyers and pamphlets. Six people work in the office.

Describe the hardware you would have installed in the office? – 5 marks
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Describe the software you would have installed? – 3 marks
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What would be the advantages and disadvantages of installing a LAN? – 2 marks
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52    What input processing and output takes place at an ATM machine (10 marks)
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