CHAPTER 4 COMPUTER HARDWARE AND SOFTWARE

1
CHAPTER 4COMPUTER HARDWARE AND SOFTWARE

• LEARNING OBJECTIVES
• EXPLAIN THE FUNCTIONS OF COMPUTER HARDWARE
  COMPONENTS.
• USE THE INTERNET TO
• RESEARCH INFORMATION
• ON THE WEB.

2
LEARNING OBJECTIVES

• EXPLAIN THE DIFFERENCE BETWEEN OPERATING SYSTEMS
  SOFTWARE AND APPLICATIONS SOFTWARE.
• TROUBLESHOOT SOFTWARE PROBLEMS.

3
LEARNING OBJECTIVES

• EXPLAIN THE IMPORTANCE OF COMPUTER ERGONOMICS TO
  PHYSICAL HEALTH.
• IDENTIFY COMPUTER ETHICAL BEHAVIORS.
• DEMONSTRATE A COMMITMENT TO CONTINUAL LEARNING
  (SOFT SKILL).

4
COMPUTER CLASSIFICATIONS

• SUPERCOMPUTERS
• MAINFRAMES
• MINICOMPUTERS
• WORKSTATION COMPUTERS
• MICROCOMPUTERS (PCs)

5
INFORMATION INPUT

• COMPUTER KEYBOARDS
• SCANNERS
• VOICE-RECOGNITION SYSTEMS
• TOUCH SCREENS
• DIGITAL CAMERAS

6
ERGONOMIC TIPS

• BE CERTAIN THE LIGHT ON THE COMPUTER SCREEN IS
  BRIGHT ENOUGH.
• THE TOP OF THE COMPUTER MONITOR SHOULD BE
  DIRECTLY IN FRONT OF YOU, WITH THE TOP AT EYE
  LEVEL

7
ERGONOMIC TIPS

• POSITION KEYBOARD AND MOUSE LOW ENOUGH SO YOUR
  SHOULDERS ARE RELAXED.
• TAKE FREQUENT BREAKS--ONE-MINUTE BREAK EVERY 20
  MINUTES.
• TAKE A SHORT REST PERIOD EVERY TWO TO THREE
  HOURS10 TO 15 MINUTES.

8
ERGONOMIC TIPS

• STAND UP EVERY 30 MINUTES.
• ADJUST YOUR CHAIR SO THAT IT SUPPORTS THE HOLLOW
  IN YOUR LOWER BACK.
• ALWAYS SIT UP STRAIGHT. YOUR WRISTS SHOULD BE IN
  A STRAIGHT LINE WITH YOUR FOREARMS.

9
ERGONOMIC TIPS

• POSITION THE KEYBOARD 24 TO 25 INCHES FROM THE
  FLOOR.
• KEEP WRISTS RELAXED AND STRAIGHT.
• MAINTAIN A VIEWING DISTANCE OF 24 TO 28 INCHES
  FROM THE EYES TO THE COMPUTER.

10
ERGONOMIC TIPS

• LOOK AWAY FROM THE SCREEN FOR A SHORT PERIOD
  EVERY 30 MINUTES.
• PLACE THE MOUSE AT THE SIDE OF THE KEYBOARD AND
  AT THE SAME LEVEL. HAVE IT CLOSE ENOUGH SO YOU
  DO NOT HAVE TO REACH LONG DISTANCES.

11
STORAGE DEVICES

• FLOPPY DISKS
• ZIP, JAZ, AND SUPERDISK EXTERNAL STORAGE
• CDs
• DVDs

12
INFORMATION OUTPUT

• MONITORS
• PRINTERS
• INKJET PRINTERS
• LASER PRINTERS
• NETWORKED PRINTERS
• MULTI-FUNCTION UNITS

13
COMPUTER NETWORKS

• THE INTERNET
• THE WEB
• INTRANET
• EXTRANET

14
SOFTWARE

• OPERATING SYSTEMS SOFTWARE
• APPLICATIONS SOFTWARE
• FREE SOFTWARE
• TROUBLESHOOTING

15
COMPUTER ETHICS

• THOU SHALT NOT USE A COMPUTER TO HARM OTHER
  PEOPLE.

16
COMPUTER ETHICS

• THOU SHALT NOT USE A COMPUTER TO STEAL.
• THOU SHALT NOT USE OR COPY SOFTWARE FOR WHICH YOU
  HAVE NOT PAID.

17
COMPUTER ETHICS

• THOU SHALL NOT APPROPRIATE OTHER PEOPLES
  INTELLECTUAL OUTPUT.
• THOU SHALL USE A COMPUTER IN WAYS THAT SHOW
  CONSIDERATION AND RESPECT.
• SOURCE Arlene Rinaldi, Florida Atlantic
  University, 1998

18
CONTINUAL LEARNING

• LEARN WHERE TO LOOK FOR INFORMATION.
• DEVELOP AN INQUIRING MIND.
• COMMIT TO CONTINUING YOUR FORMAL EDUCATION.
• DEVOTE TIME TO
• LEARNING.