The definition of definition is “a statement expressing the essential nature of something.” At least that’s one way Webster defines the word. But why is a definition so important? Because definitions enable us to have a common understanding of a word or subject; they allow us to all be on the same page when discussing or reading about an issue. And while we tend to make sure we properly define our words and phrases so that all understand, how well do we do that with our projects, programs or initiatives?
Everyday we are challenged with new technology and new adaptations of existing technology with the result that we are continually all beginners. While this book is written primarily for people who wish to know more about personal computer (PC) hardware, it may also prove to be helpful to people who wish to expand their knowledge of the PC’s hardware.
It is remarkable that a personal digital assistant, such as the Handspring Visor or the Palm Pilot, holds more raw computing power than existed in the entire world only 20 years ago. It is also remarkable that the basic structure of the personal computer over this same 20 years has not changed all that much. The essential components that make a PC are the same today as they were in 1981. What has changed is the integration scale, the ability of the peripherals, and the size and capabilities of the software.
I have included all of the technology with which a PC user comes into contact and explain its function and interactions with the other components and technologies in the PC. While the details of all of the PC’s components is included in the book, additional information has been included for the areas to which the beginning user has more contact, such as the audio/visual systems, CD-ROM and DVD drives, hard disk drives, keyboard, mouse, and others.
A peripheral is a piece of computer hardware that is added to a computer in order to expand its abilities. The term peripheral is used to describe those devices that are optional in nature, as opposed to hardware that is either demanded or always required in principle. There are all different kinds of peripherals you can add your computer. The main distinction among peripherals is the way they are connected to your computer. They can be connected internally or externally.