Digital-electronics 简明教程

What is EBCDIC Code?

EBCDIC (Extended Binary Coded Decimal Interchange Code) 是数字系统中用于表示字母数字字符（如字母、数字、符号等）的字母数字代码。

The EBCDIC (Extended Binary Coded Decimal Interchange Code) is an alphanumeric code used in digital systems to represent alphanumeric characters, such as letters, numbers, symbols, etc.

EBCDIC 发音为“eb-si-dik”。它是一种 8 位二进制代码，用于在数字系统中表示字母数字数据。

EBCDIC is pronounced as "eb-si-dik". It is an 8-bit binary coded used for representing alphanumeric data in digital systems.

在这里，我们将详细解释 EBCDIC 代码及其优点和应用。

Here, we will explain the EBCDIC code in detail along with its advantages and applications.

What is EBCDIC Code?

EBCDIC 代表 Extended Binary Coded Decimal Interchange Code 。它是一种 8 位二进制代码，在数字系统中用于以数字形式表示字母数字数据。

EBCDIC stands for Extended Binary Coded Decimal Interchange Code. It is an 8-bit binary code used in digital systems to represent alphanumeric data in digital form.

由于它是一种 8 位代码，因此它可以表示 28 = 256 个可能的字符。因此，它能够表示比标准 ASCII 代码（一种 7 位代码）多 128 个字符。

Since, it is an 8-bit code, hence it can represent total 28 = 256 possible characters. Therefore, it is able to represent 128 more characters than standard ASCII code, which is a 7-bit code.

EBCDIC 代码是由 IBM（国际商用机器公司）开发的，主要用于 IBM 大型计算机系统。EBCDIC 代码最初设计用于大型计算机，用于字母数字数据传输。

The EBCDIC code was developed by IBM (International Business Machine) and is mainly used in IBM’s mainframe computer systems. EBCDIC code was primarily designed to be used in larger computers for alphanumeric data transmission.

虽然 EBCDIC 代码可以表示 256 个字符，但 EBCDIC 代码中的一些位组合尚未分配。

Although the EBCDIC code can represent 256 characters, but some of the bit combinations in the EBCDIC code are unassigned.

EBCDIC Code Table

以下是十进制和十六进制格式的 EBCDIC 代码 −

The following highlights the EBCDIC code in their decimal and hexadecimal format −

The EBCDIC Code
Decimal
Hexadecimal
Character
Decimal
Hexadecimal
Character
0
00
NUL
128
80

1
01
SOH
129
81
a
2
02
STX
130
82
b
3
03
ETX
131
83
c
4
04

132
84
d
5
05
HT
133
85
e
6
06

134
86
f
7
07
DEL
135
87
g
8
08

136
88
h
9
09

137
89
i
10
0A

138
8A

11
0B
VT
139
8B

12
0C
FF
140
8C

13
0D
CR
141
8D

14
0E
SO
142
8E

15
0F
SI
143
8F

16
10
DLE
144
90

17
11

145
91
j
18
12

146
92
k
19
13

147
93
l
20
14

148
94
m
21
15

149
95
n
22
16
BS
150
96
o
23
17

151
97
p
24
18
CAN
152
98
q
25
19
EM
153
99
r
26
1A

154
9A

27
1B

155
9B

28
1C
IFS
156
9C

29
1D
IGS
157
9D

30
1E
IRS
158
9E

31
1F
IUS
159
9F

32
20

160
A0

33
21

161
A1
~
34
22

162
A2
s
35
23

163
A3
t
36
24

164
A4
u
37
25
LF
165
A5
v
38
26
ETB
166
A6
w
39
27
ESC
167
A7
x
40
28

168
A8
y
41
29

169
A9
z
42
2A

170
AA

43
2B

171
AB

44
2C

172
AC

45
2D
ENQ
173
AD

46
2E
ACK
174
AE

47
2F
BEL
175
AF

48
30

176
B0

49
31

177
B1

50
32
SYN
178
B2

51
33

179
B3

52
34

180
B4

53
35

181
B5

54
36

182
B6

55
37
EOT
183
B7

56
38

184
B8

57
39

185
B9

58
3A

186
BA

59
3B

187
BB

60
3C

188
BC

61
3D
NAK
189
BD

62
3E

190
BE

63
3F
SUB
191
BF

64
40
space
192
C0
{
65
41

193
C1
A
66
42

194
C2
B
67
43

195
C3
C
68
44

196
C4
D
69
45

197
C5
E
70
46

198
C6
F
71
47

199
C7
G
72
48

200
C8
H
73
49

201
C9
I
74
4A
[
202
CA

75
4B
.
203
CB

76
4C
<
204
CC

77
4D
(
205
CD

78
4E
+
206
CE

79
4F

!
207
CF

80
50
&
208
D0
}
81
51

209
D1
J
82
52

210
D2
K
83
53

211
D3
L
84
54

212
D4
M
85
55

213
D5
N
86
56

214
D6
O
87
57

215
D7
P
88
58

216
D8
Q
89
59

217
D9
R
90
5A
! ]
218
DA

91
5B
$
219
DB

92
5C
*
220
DC

93
5D
)
221
DD

94
5E
;
222
DE

95
5F
^
223
DF

96
60
-
224
E0
\
97
61
/
225
E1

98
62

226
E2
S
99
63

227
E3
T
100
64

228
E4
U
101
65

229
E5
V
102
66

230
E6
W
103
67

231
E7
X
104
68

232
E8
Y
105
69

233
E9
Z
106
6A


234
EA

107
6B
,
235
EB

108
6C
%
236
EC

109
6D
_
237
ED

110
6E
>
238
EE

111
6F
?
239
EF

112
70

240
F0
0
113
71

241
F1
1
114
72

242
F2
2
115
73

243
F3
3
116
74

244
F4
4
117
75

245
F5
5
118
76

246
F6
6
119
77

247
F7
7
120
78

248
F8
8
121
79
‘
249
F9
9
122
7A
:
250
FA

123
7B
#
251
FB

124
7C
@
252
FC

125
7D
‘
253
FD

126
7E
=
254
FE

127
7F
"
255
FF

Characteristics of EBCDIC Code

以下是 EBCDIC 代码的一些关键特性 −

The following are some key characteristics of the EBCDIC code −

EBCDIC code uses 8-bit binary coding scheme to represent alphanumeric data.
EBCDIC code provides characters and symbols used in the field of commerce and finance. Hence, it is well-suited for business data processing applications.
EBCDIC code was primarily designed to use in IBM mainframe systems and it was compatible with punched card systems.
EBCDIC code has a non-sequential binary assignment of characters.
EBCDIC code is not directly compatible with ASCII (American Standard Code for Information Interchange) due to its non-sequential binary assignment.
EBCDIC code is a better choice for record-oriented processing in which the data is organized into fixed-length records like in batch processing.

Limitations of EBCDIC Code

但是，EBCDIC 代码有几个优点。但它也有一些局限性，如下所示 −

However, the EBCDIC code has several advantages. But it also has some limitations as given below −

EBCDIC code is not compatible with many modern computing systems that use ASCII or Unicode character encoding schemes.
EBCDIC code has some unassigned binary patterns.
EBCDIC code is less efficient character encoding standard in terms of storage utilization.
EBCDIC code is not compatible with internet standards and protocols.

Applications of EBCDIC Code

EBCDIC 代码在现代计算机和数字系统中不太常见。但在一些旧的数字系统中还是有应用场景的。以下是 EBCDIC 代码的一些关键应用 −

The EBCDIC code is less common in modern computers and digital systems. But it has applications in some old digital systems. Here are some key applications of EBCDIC code −

EBCDIC was mainly used in mainframe computers used in the field of finance and banking.
EBCDIC code was also used in mainframe systems employed in government and healthcare sector.
EBCDIC code is used in control systems used in manufacturing industries.
Systems used for batch processing also use EBCDIC code for data representation.

Conclusion

EBCDIC（扩展二进制编码十进制交换代码）是一种 8 位二进制代码，用于数字表示字母数字数据，例如字母、数字、符号和控制字符。

EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8-bit binary code used for digital representation of alphanumeric data such as letters, numbers, symbols, and control characters.

EBCDIC 代码主要设计用于 IBM 为金融和银行业开发的大型机系统。由于某些限制，如与 ASCII 代码不兼容，它变得不太流行。在现代计算系统中，EBCDIC 代码不再使用。

The EBCDIC code was mainly designed for the mainframe systems developed by IBM for finance and banking sector. Due to some limitations like incompatibility with ASCII code, it is becoming less popular. In modern computing systems, the EBCDIC code is not being used.