Keyboard:

Laid out like a standard typewriter, the keyboard is used for typing and, in some
cases, can also be used as an alternative to the mouse.
Figure 1-1: Basic PC hardware
Computer software refers to the somewhat invisible stuff that makes the computer do whatever it is you
want it to do. Any program that you purchase or download, as well as any pictures, music, or other stuff
you put “in your computer” is software. Software is information that’s recorded to some kind of disk,
such as a floppy disk, CD-ROM, or the hard disk that resides permanently inside your computer.
So with the basic concepts of hardware and software covered, let’s start talking about how you use that
stuff.