This part of the book (Part I—The Basics) also contains an introduction to some of
the underlying concepts and principles of the PC, including digital logic, electronics,
and electricity.
Part II (Internal Components) looks at the electronics and other components found
inside the system case. This is where all the mysterious stuff goes on and is a very good
place to start your reading.
Part III (External Components) covers the devices found outside the system case
(includingthesystemcaseitself)thatconnecttothecomputerthroughitsinterfaceports.
Finally, Part IV (System Care and Troubleshooting) is a guide to how to care for your
computer and figure out what is wrong when the PC is not working as it should.
Wehopeyouenjoythisbook.Whenyouhavecompletedit,youwillbeanex-beginner.
Chapter 1: The Personal Computer^23