... those lucky PC buyers who got a technical reference book or at least a user handbook when you bought your PC, you should have a look at this handbook first to find out how to open the case If you’ve ... wide area network (WAN) Computers are thus networked over long distances, for instance, the new passenger booking system AMADEUS with which you can reserve airline tickets all over the world The ... advanced users would also be better prepared for the later and more technically demanding parts of the book Main Components 1.1 The Computer and Peripherals Personal computer (PC), by definition, means...