Teaching tip Figure 1A.1 on page 4 shows a traditional desktop PC and a “tower” model. Insider information System units are commonly called cases. Many computer enthusiasts customize or ‘mod’ their cases with windows and lights. See www.casemodgod.com for examples of cases and products. Sun Microsystems makes the most popular workstations on the planet. Sun’s systems are used in diverse applications such as medical imaging and CGI (computer generated image) animation.
Discussion point Have students contrast desktop and notebook computers. Focus on the pros and cons of each type of computer.
Teaching tip The tablet PC was designed to simulate a piece of paper. Users interact with the tablet as if it was an unlimited paper notebook. For more information See www.microsoft.com/windowsxp/tabletpc/evaluation/tours/default.mspx for an example of the Tablet PC in action.
Insider information There are two main types of handheld computers: Palm and Pocket PC computers. Palm versions use a customized operating system that is similar to an older Macintosh. Compatibility to computers can be tricky. Pocket PC versions use a version of Windows XP. Pocket PC versions usually include versions of Word and Excel that synchronize nicely with their full size cousins. Discussion point Find a features list of a current smart phone. Have students discuss whether the feature list is too large or too small. Be sure to help the students flesh out the learning curve and complexity of the device. Teaching tip At this point, refer the students to the productivity tip on page 13. This tip helps the student determine what type of PC is best for them.
Teaching tip A computer server is often analogous to a waiter (server) in a restaurant. Each client asks the waiter (server) for something. The server then delivers it to the client
Teaching tip Students have a hard time understanding trillions of calculations. A simple explanation is to add 1 trillion random numbers together in a second. Contrast the speed of a super computer to the fastest desktop computer advertised during the week of class.
Teaching tip The interaction between a CPU and secondary processors is much like the interaction between a boss and subordinate. The boss tells the subordinate what to do but not necessarily how to accomplish the task. The subordinate only bothers the boss when guidance or more data is needed.
Insider information Intel, the manufacturer of popular CPUs, originally made RAM for mainframe and minicomputers. Today Kingston is a leading RAM manufacturer.
Teaching tip Figure 1A.21 on page 15 shows examples of data versus information.
