1. 30 January How Computers Work

2. News: 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 Negroponte Craig Barrett

3. Business Case Assignment Team Assignments Instructions On the web

4. On to today’s topic How Computers Work

5. Sometimes They Don’t Having a Bad Day Mouse Won’t Work

6. What 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 data

7. What Wasn’t Possible Before? We can do things in virtual environmentsvirtual environments Chemists can see things at microscopic levelsmicroscopic levels Micron: millionth of a meter Model weatherweather Hurricane predictions Model historic eventshistoric events

8. Marvelous 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?

9. 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 examples? IN PROCESS OUT