American standard Code interchange information

  

Below is the ASCII character table, including descriptions of the first 32 invisible characters.


ASCII was originally designed for the with teletypes, and so the descriptions are somewhat obscure and their use is frequently not as intended.


Java uses Unicode, which includes ASCII and other character from languages around the world.

Dec = Decimal Value

Char = Character

'5' has the int value 53

if we write '5'-'0' it evaluates to 53-48, or the int 5

if we write char c = 'B'+32; then c stores '

 

0  NUL (null)  

1  SOH (start of heading)  

2  STX (start of text)  

3  ETX (end of text)  

4  EOT (end of transmission)  

5  ENQ (enquiry)  

6  ACK (acknowledge)  

7  BEL (bell)   

8  BS (backspace)  

9  TAB (horizontal tab)  

 

11  VT (vertical tab) 

12  FF (NP form feed, new page) 

13  CR (carriage return) 

14  SO (shift out) 

15  SI (shift in) 

16  DLE (data link escape) 

17  DC1 (device control 1)

18  DC2 (device control 2) 

19  DC3 (device control 3) 

20  DC4 (device control 4) 

  

21  NAK (negative acknowledge) 

22  SYN (synchronous idle) 

23  ETB (end of trans. block) 

24  CAN (cancel) 

25  EM (end of medium)

26  SUB (substitute) 

27  ESC (escape) 

28  FS (file separator)

29  GS (group separator)

30  RS (record separator) 

31  US (unit separator) 

32  SPACE

33  ! 

34  "  

35  #   

36  $  

37  %  

38  &  

39  '  

40  (  

41  )

42  *  

43  + 

44  ,

45  -

46  .

47  /

48  0

49  1  

50  2 

 

 

 

51  3

52  4

53  5

54  6

55  7

56  8

57  9

58  :

59  ;

60  <

61  =

62  >

63  ?

64  @

65  A

66  B

67  C

68  D

69  E

70  F

71  G

72  H

73  I

74  J

75  K

76  L

77  M

78  N

79  O

80  P

81  Q

82  R

83  S

84  T

85  U

86  V

87  W

88  X

89  Y

90  Z

91  [

92  \

93  ]

94  ^  

95  _

96  '

97  a

98  b

99  c


100  d

101  e

102  f

103  g

104  h

105  i

106  j

107  k

108  l

109  m

110  n

111  o

112  p

113  q

114  r

115  s

116  t

117  u

118  v

119  w

120  x

121  y

122  z

123  {


124  |

125  }

126  ~

127  DEL