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Information Systems for you
Chapter 3 - The 'Ins' and 'Outs' of Data 
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» Chapter 28
» Chapter 29
» Chapter 30
» Chapter 31
» Chapter 32
» Chapter 33
» Chapter 34
» Exam Answers
   - Full Course
» Exam Answers
   - Short Course
Questions (Page 22)
  You no longer remain anonymous as people know what you look like.
  People may send pornographic images.
  You have to worry about your appearance just to use the computer.
  Adults may use the service to lure children into meetings.
 
Questions (Page 24)
  A Can scan in colour photographs into sales details and then print them out.
  B Can print out curtain styles and colours to send or give to customers.
  C Can print copies out to give to friends and relatives thus saving the development costs.
  D The pupil can improve the appearance of diagrams, charts etc.
 
Test Yourself (Page 27)
  A keyboard
  B mouse
  C joysticks
  D light pens
  E barcode readers
  F optical character reader
  G magnetic ink character recognition
  H optical mark recognition
  I Kimball tags
  J retail
  K laser
  L ink jet
 
Things To Do (page 28)
1(a)
  Mouse. Used to draw lines and select the size of baths, basins, showers etc.
(b)
  Graph plotter
(c)
  Estimates, stock control, invoicing, wordprocessing etc.
 
2(a)
  Joystick. Used instead of the cursor keys to produce movement on the screen. Mainly for playing games.
(b)
  Scanner (or hand-held scanner). Used to scan pictures (or text) into the computer. May be used to scan in photographs into a DTP document.
(c)
  Keyboard. Used to type in characters. Used for wordprocessing, typing in operating system/program instructions etc.
(d)
  Graphics tablet. Used for design work where too many icons would clutter up the screen. Used by architects, designers etc.
(e)
  Touch-screen. Used as a simple input device to make selections. Used by customers in banks and building societies. Also quiz games in pubs.
(f)
  Laser printer. Used for high quality text and graphics. Used in wordprocessing, DTP and any work which needs printing.
(g)
  Dot matrix printer. Used as a cheap printer. Used where quality of print is not important or where multiple copies are needed (eg production of invoices).
(h)
  Mouse. Used instead of the cursors to draw or make selections. Used in all Windows applications.
(i)
  Barcode reader/scanner. Used to input a code contained in the bars. Used in shops and libraries.
(j)
  Ink-jet printer. Used for high quality print and for colour printing. Any job which needs printing such as wordprocessing.
 
4
Will it be used to print multi-part stationery?
How much can they spend?
Do they need colour?
Do they need to print graphics?
Will noise be a problem?
Is there enough money for running costs?
What is the volume of pages printed each day/week?
Is the printing done in one go?
Will the printer be shared?
Is colour printing needed?
 
Examination Questions (page 331)
1(a)
  Storage
(b)
  Input
(c)
  Output
(d)
  Output
(e)
  Storage
(f)
  Input
(g)
  Input
 
2
Any four from the following:
Speed: Need a fast printer for mail merges or large print runs.
Colour: Need a ink-jet printer if a cheap colour printer is needed.
Multiple copies: Need an impact printer such as a dot matrix printer.
Cost: Although most ink jet printers are cheap to buy they can be expensive to run because the ink cartridges are very expensive.
Ability to work with the chosen software: Printer drivers should be available.
     
3(a)
 
  Tick four boxes only
Dot-matrix printer
Plotter
Mouse
CD-ROM
Speaker
Keyboard
VDU
ROM
DTP package
     
(b)
One from: laser printer, ink-jet printer, robot arm, actuator etc.
(c)
Mouse and keyboard
(d)
One from: graphics tablet, joystick, sensor, scanner, barcode reader etc.