The Impact if the Internet

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The Impact if the Internet

• Unit 3_2

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E-Commerce - Requirements

• Trained staff
• Electronic catalogue
• Search facility
• Secure payment methods
• Database of customer orders (EDI)

3
File Transfer Protocol

• Compacts data into packets
• Errors are checked
• Message is sent that its OK
• Computer programs
• Web pages
• Music

4
E-Commerce

• Advantages to Industry
• No need for high street presence saving costs
• From personnel and shop.
• Much wider audience
• Just in time delivery
• Storage of customers details is a valuable
  marketing tool.

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E-Commerce

• Advantages to customer
• Allows 24/7 access
• Shop from anywhere I world from home
• No need to leave home
• Can have good delivered (to a friend)
• Specialist items easier to source
• Goods are often cheaper
• Comparison is easy

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E-Commerce

• Disadvantages to customer
• Fraud
• You cant feel or see the goods
• May have to wait for delivery
• Substitutes can be made

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How to Access Information

• Use the URL
• Use hyperlinks
• Use a search engine

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Search Engines

• Web Crawlers
• Database
• Key Words
• Most relevant connection
• Most popular site
• Most authoritative site
• Pay for sponsored link

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Search Engines

• And
• OR
• NOT
• Exact match
• Quotation

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Search Engines

• Relevance
• Reliability
• Accuracy
• Bias
• Precise
• Appropriate for audience

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Distributed Computing

• Linking lots of less powerful computers together
  to replicate the power of a super computer.
• Reduces cost
• Computers can be anywhere
• Improved performance
• Security

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Distributed Computing

• SETI
• The search for extra terrestrial intelligence
  uses huge amounts of power, but linked domestic
  computers can do the same job

13
Connecting to the Internet

• Cable access
• Dialup
• Broadband
• Mobile

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Moral Issues

• Deliberately misleading people
• Bullying
• Inappropriate websites
• Spreading rumours

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Ethical Issues

• Plagiarism
• Spam
• Big Brother
• Using someone elses connection
• Distorting reality the photoshop effect

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Social issues

• Privacy
• Gambling addiction
• Obesity
• Addiction to games
• Disenfranchisement
• Call centres moving abroad
• Closing shops

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Ownership and control

• Who is in control?
• Offensive moi?
• Censorship
• Communities coming together
• People drifting apart