Microsoft Office Tutorials and References
In Depth Information
What Is a Computer?
you want to use the computer to write a report. First you instruct the computer to use the
word processing program. After activating the word processing program, you begin typing
the text of your report. The data you type into the computer is called input . You use an
input device , such as a keyboard or a mouse, to input data and issue commands.
Commands are another type of input that instruct the computer on how to process the
data. For example, in your report, you might want to center the title and double-space the
text of the report. You issue the appropriate commands in the word processing program
that will instruct the computer to modify the data you have input so the text is double-
spaced and the title of the report is centered. Modifying data in this way is referred to as
processing . In a computer, processing tasks occur on the motherboard , which is the main
circuit board of the computer. The motherboard contains the processing hardware , the
computer’s major electronic components.
How a computer works
Figure 2
1
COMMANDS:
center
double-space . . .
SOURCE OF
DATA
OUTPUT DEVICE: monitor
OUTPUT DEVICE: printer
4
OUTPUT
5
STORAGE
STORAGE MEDIUM:
floppy disk
3
PROCESSING
2
INPUT
INPUT DEVICE: keyboard
INPUT DEVICE: mouse
The result of the computer processing your input is referred to as output . Output can
be in many different forms, for example reports, documents, graphs, sounds, and pictures.
Computers produce output using output devices , such as a computer monitor or a printer.
The output you create using a computer can be stored either inside the computer itself, or
on an external storage device, such as a floppy disk. You will learn more about storage
devices later in this tutorial.
Using a computer has several advantages. The first is the speed at which you can per-
form tasks. Second, the capability of storing the output and using it over and over again,
in so many different ways, makes using a computer the most effective way to perform
many personal and business tasks. Finally, an important advantage is sharing data and
output with others. You make a note to find out whether Paik employees will need to
share their data.
 
Search JabSto ::




Custom Search