2 Online ServicesExamples of online services that would not be called as transaction.Arranging packages to be picked up and delivered to addressesPeople filling in their tax returnsReserving and renewing library books
3 Online Shopping (e-commerce) Reasons for its popularity Items are cheaper onlineShopping can be done in the comfort of home at convenient timeCan shop from their favourite shopCan avoid travelling and spending time and money for visiting many shopsCan compare wide range of product, sellers from different countriesThere is a greater choice of manufacturers, sellers and brands.There is no need to wait for delivery when software are purchased
4 Online Shopping (e-commerce) Reasons for its popularity Online catalogues are availableCustomer can read reviews of previous buyersMore helpful for disabled people to do shoppingSellers can keep details of buyer for future useBuyers can use coupons.
5 Steps customers to go through while doing online shopping Deciding which online shop to useBrowsing product categoriesUsing virtual shopping basket (shopping cart)Making payment – check outBilling address, shipping address, customer phone number, address
6 Selling goods online Can offer cheaper price for products Warehouse and staff costs are lowerAir-conditioning and shop space are not required
8 Online banking Advantages to the Customers No need to spend money for transportation to bankCan do banking at any timeEasier for people with disabilityInterest rates on saving accounts are higher
9 Online banking Disadvantages to the Customers May loose personal contact with the bankMust have access to computer and internetRisk of hacking and interceptionCustomer may mismanage the account.Cost of buying computer and internet connectionCannot make cash withdrawMay receive fraudulent s asking for username and passwords.
10 Data Protection ActPersonal data shall be obtained and processed fairly and lawfullyData should be used only for specified and lawful purposesShould be adequate, relevant and not excessive for the required purpose.Personal data shall be accurate and kept up to dateData should be destroyed when it is no longer required.Data should be processed in accordance with the right of the data subject.Appropriate security measures must be takes to prevent unauthorized accessPersonal data cannot be transferred to any third party or any other country
11 Internet Use IssuesReliability of Information –anyone can create a websiteUndesirable informationSecurity of Data Transferred Using the InternetPhishing – someone pretending to be a representative from bank to steal credit card details/username/password, through .Pharming – redirect genuine website’s traffic to their own site
12 Internet Use Issues‘Skimming’ – stealing all the information on the card. Employees of call-in centers pass information to criminalsIdentity Theft – Usually occurs in the form of stolen credit card.Spyware – key loggersIt happens when you download untrusted software from internetSpam – un-solicited s
13 Expert SystemsExpert system is a computer which can replace a human expert in a particular subject area.It is used in places where human experts are rare.
14 How Expert Systems Work It has three components:User Interface – allows user to ask questions/answer questions and receive advice.Knowledge Base – a large collection of information & rules, collected from different sources.Inference Engine – Picks information from the knowledge base that matches the queries
15 Expert System - DesignKnowledge BaseInference EngineUser interface
16 Uses of Expert System Medical Diagnosis Strategy Games – Chess Financial Advice – Tax calculationsIdentify items – plant taxonomyMineral prospectingDiscover locations to drill for water / oilDiagnose Car problems
17 Computer ModelIt is a computer generated design that attempts to simulate a real world situation.
18 Computer Model are used for... For testing systemsPredicting resultsTraining peopleTo investigate
19 Applications of Computer Model Designing cars and testing themWeather forecastingConstruction of buildingsBusiness predictionsTraining pilots
21 Flight Simulator - Advantages Safer – because pilots mistakes doesn’t cause accidents.No need to use real flights-they can be in service for other purposeTrainer can test the pilot by creating artificial flying situations (impossible in real flights)
22 Simulation - Testing cars Safer – can be done in the comfort of a room.Cheap – no need to destroy real cars for testing.