30 JanuaryNews: One Laptop Per ChildBusiness Case AssignmentOn to today’s topicSometimes They Don’tWhat does a Computer Do Well?What Wasn’t Possible Before?Marvelous ManipulatorWhat a Computer Does30 January How Computers WorkNews: One Laptop Per ChildWorld Economic ForumNew York Times ArticleBoth believe in low-cost machines, but…How to introduceOperating systemWhose machineThreat to other PC manufacturers?Nick NegroponteCraig BarrettBusiness Case AssignmentTeam AssignmentsInstructionsOn the webOn to today’s topicHow Computers WorkSometimes They Don’tHaving a Bad DayMouse Won’t WorkWhat does a Computer Do Well?Intelligence amplifier amplifies our ability to perform mental activities“power tools” for the mindCan process much more informationDoes repetitive tasks quickly and correctlyCheck things more quicklyRemoves people from boring tasksManipulates forms and dataWhat Wasn’t Possible Before?We can do things in virtual environmentsChemists can see things at microscopic levelsMicron: millionth of a meterModel weatherHurricane predictionsModel historic eventsMarvelous ManipulatorManipulates form, not contentEverything is a symbolComputers do not understand meaningWhen it appears to understand or apply judgment…Reflecting human knowledge that is encapsulatedProgramming: capturing our knowledge“expert systems”Examples from movies or books?What a Computer DoesOne input, one outputDisplaying a movieOne input, multiple outputsDifferent reports from the same dataMultiple inputs, one outputComputing a statisticOther