is 2101---fall 2009 chapter 3 9/2/2009. epidemics and health h1n1 – younger are more at risk –...
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IS 2101---Fall 2009
Chapter 39/2/2009
2IS 2101/01---Fall 2009
Epidemics and Health
• H1N1– Younger are more at risk– Easily spread in crowds (like classes)
• Two of your lowest quizzes will be dropped– There should be at least one per week
• Tests can be made up
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IS 2101/01---Fall 2009 3
LOOKING AT THE PARTS
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4IS 2101/01---Fall 2009
Communication
• A port is a physical connector used by the computer to communicate with other devices
• Parallel• Serial– USB
• Network– Ethernet
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5IS 2101/01---Fall 2009
Communication
• Some communication is not over physical wires or cables
• Wireless ethernet• Bluetooth• Infrared
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6IS 2101/01---Fall 2009
Expansion Cards
• Generally used to provide connections to external devices
• Graphics cards for connecting to monitors
• Network cards
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7IS 2101/01---Fall 2009
Software
• Application software• System software– Firmware– Operating system– Utilities
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8IS 2101/01---Fall 2009
Operating Systems• Provides the foundation for all other
software• Application Programmer’s Interface• User interface to control the system– GUI– Command line
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9IS 2101/01---Fall 2009
Different OS’s
• Different hardware• Different services and resources
provided• Some are free
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10IS 2101/01---Fall 2009
Common OS’s
• Microsoft Windows– Intel type CPU’s
• OS/X–Macintosh
• Linux– Numerous processors supported–Many free versions
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11IS 2101/01---Fall 2009
Some Utilities
• Disk Defragmenter• Task manager• Task scheduler --- cron• Backup• Communication– SSH secure shell– SFTP secure file transfer protocol
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12IS 2101/01---Fall 2009
Some Applications
• Productivity software• Entertainment software• Development software
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13IS 2101/01---Fall 2009
Some Productivity Software
• Spreadsheet• Word processing• Database• Presentation• Communication (e-mail)• Image manipulation
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14IS 2101/01---Fall 2009
Image Manipulation
• Simple editing– Cropping– Rotating– Filtering
• More complex– Overlays– Complex filters
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15IS 2101/01---Fall 2009
Free Software
• Open Office–Word processing, spreadsheet,
database, presentation– Can use Microsoft Office formats
• Irfanview– Basic image editing tool
• GIMP– Complex image editing tool
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16IS 2101/01---Fall 2009
Networks
• Extent– Local area–Wide area– Internet: a confederation of local area
networks
• Topology– Bus: shared communication line– Others: star, ring
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17IS 2101/01---Fall 2009
Safe Practices
• Maintenance– Backups– Updates
• Malware– Viruses– Spyware
• Hacking– Firewalls
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18IS 2101/01---Fall 2009
Start here 9/7
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19IS 2101/01---Fall 2009
Malware
• How do you get it?– Generally, executing a program– These programs can be packaged many
ways
• How can you tell?–Misbehaving system– Anti-virus tools– Someone else notices
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20IS 2101/01---Fall 2009
Getting an Antivirus
• http://its.kennesaw.edu/students.htm• Download Software (link on left)• Log in using netid
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21IS 2101/01---Fall 2009
How do Virus Checkers Work?
• Look for patterns in files• Check as new content is introduced
to the system– Downloads– E-mail
• Check if certain important files have changed
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22IS 2101/01---Fall 2009
Ergonomics
• Figure 37 on page 135• Wrist support on keyboard– And mouse
• Monitor at eye level or below• Legs at comfortable angle
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