Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

HANEL

NUMBERING AND CODING SYSTEMSASCII Code

‰The ASCII (pronounced

“ask-E

”) code

assigns binary patterns for ¾Numbers 0 to 9¾All the letters of English alphabet, uppercase and lowercase¾Many control codes and punctuation marks‰The ASCII system uses 7 bits to represent each code

z

7A

Z

5A

y

79

Y

59

...

...

...

d

64

D

44

c

63

C

43

b

62

B

42

a

61

A

41

Symbol

Hex

Symbol

Hex

Selected ASCII codes