- Information stored
inside
a computer
must be represented using:
- Binary numbers !!!
(or "binary signals")
(That's because the memory of a computer can only store binary digits)
- Binary numbers !!!
(or "binary signals")
- Example of
encoding methods
that uses
Binary numbers:
- The 2's complement encoding
method
(which you learned in CS255):
Code Value represented by code ============================================= 11111111 -1 00000000 0 00000001 1 ....
- ASCII code:
Code Character represented by code =============================================== 01100001 'a' 01100010 'b' ....Alpha-numerical information inside the computer is represented using the ASCII code
- The 2's complement encoding
method
(which you learned in CS255):
- Very important condition:
- To facility
exchange of
information:
- Every computer must use the same encoding !!!
Example:
- 01100001 must represent the character a in every computer !!!
- To facility
exchange of
information:
- (International) encoding standard
for languages using the
English alphabet:
- American Standard Code for Information Interchange (ASCII) code
The ASCII code table:
- International code for
all languages:
- Unicode !!!
More on the Unicode: click here
- Unicode !!!
- Graphically:
