Microsoft Office Tutorials and References
In Depth Information
Processing Hardware
was developed to add codes for punctuation marks, symbols, such as $ and ©, and
additional characters, such as é and ü, that were not included in the original 128 codes.
Most computers use the original ASCII defi nitions, but not all computers use the same
defi nitions for Extended ASCII. Computers that run the Windows operating system
use the set of Extended ASCII defi nitions defi ned by the American National Standards
Institute (ANSI). Figure 5 shows sample ASCII code with ANSI standard Extended ASCII
characters.
Figure 5
Sample ASCII code representing letters and symbols
Character
ASCII Code
Binary Number
(space)
32
00100000
$
36
00100100
A
65
01000001
B
66
01000010
a
97
01100001
b
98
01100010
?
129
10000001
£
163
10100011
®
217
11011001
é
233
11101001
Processing Hardware
The hardware and the software of a computer system work together to process data
and commands. Modifying data is called processing . Commands are instructions to the
computer on how to process the data. For example, you issue a command in the word
processing program to instruct the computer to center the title in a report.
Motherboard
Processing tasks occur on the motherboard , which contains the processing hardware—
the computer’s major electronic components—and is located inside the computer. See
Figure 6. The motherboard is a circuit board , which is a rigid piece of insulating material
with circuits , or electrical paths, on it that control specifi c functions.
Figure 6
Motherboard
 
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