Question

进制转换问题！！！

已知字符B的ASCII码的二进制数是1000010，字符F对应的ASCII码的十六进制数为多少？
（请注明详细步骤，谢谢）

Answer 1

B的ASCII码为1000010,F在B的后面4位，又4的ASCII码为100
所以 F的 ASCII码的二进制为1000010 + 100 = 1000110
转换成16进制 ＝ 46
算法：1000110按照8421转换后面4位（0110）为6 ，前面3位（100）为4
合起来为46

Answer 2

70，你去对照ASCII码表，就知道了
Decimal Octal Hex Character Description
0 0 00 NUL
1 1 01 SOH start of header
2 2 02 STX start of text
3 3 03 ETX end of text
4 4 04 EOT end of transmission
5 5 05 ENQ enquiry
6 6 06 ACK acknowledge
7 7 07 BEL bell
8 10 08 BS backspace
9 11 09 HT horizontal tab
10 12 0A LF line feed
11 13 0B VT vertical tab
12 14 0C FF form feed
13 15 0D CR carriage return
14 16 0E SO shift out
15 17 0F SI shift in
16 20 10 DLE data link escape
17 21 11 DC1 no assignment, but usually XON
18 22 12 DC2
19 23 13 DC3 no assignment, but usually XOFF
20 24 14 DC4
21 25 15 NAK negative acknowledge
22 26 16 SYN synchronous idle
23 27 17 ETB end of transmission block
24 30 18 CAN cancel
25 31 19 EM end of medium
26 32 1A SUB substitute
27 33 1B ESC escape
28 34 1C FS file seperator
29 35 1D GS group seperator
30 36 1E RS record seperator
31 37 1F US unit seperator
32 40 20 SPC space
33 41 21 !
34 42 22 "
35 43 23 #
36 44 24 $
37 45 25 %
38 46 26 &
39 47 27 '
40 50 28 (
41 51 29 )
42 52 2A *
43 53 2B +
44 54 2C ,
45 55 2D -
46 56 2E .
47 57 2F /
48 60 30 0
49 61 31 1
50 62 32 2
51 63 33 3
52 64 34 4
53 65 35 5
54 66 36 6
55 67 37 7
56 70 38 8
57 71 39 9
58 72 3A :
59 73 3B ;
60 74 3C <
61 75 3D =
62 76 3E >
63 77 3F ?
64 100 40 @
65 101 41 A
66 102 42 B
67 103 43 C
68 104 44 D
69 105 45 E
70 106 46 F
71 107 47 G
72 110 48 H
73 111 49 I
74 112 4A J
75 113 4B K
76 114 4C L
77 115 4D M
78 116 4E N
79 117 4F O
80 120 50 P
81 121 51 Q
82 122 52 R
83 123 53 S
84 124 54 T
85 125 55 U
86 126 56 V
87 127 57 W
88 130 58 X
89 131 59 Y
90 132 5A Z
91 133 5B [
92 134 5C \
93 135 5D ]
94 136 5E ^
95 137 5F _
96 140 60 `
97 141 61 a
98 142 62 b
99 143 63 c
100 144 64 d
101 145 65 e
102 146 66 f
103 147 67 g
104 150 68 h
105 151 69 i
106 152 6A j
107 153 6B k
108 154 6C l
109 155 6D m
110 156 6E n
111 157 6F o
112 160 70 p
113 161 71 q
114 162 72 r
115 163 73 s
116 164 74 t
117 165 75 u
118 166 76 v
119 167 77 w
120 170 78 x
121 171 79 y
122 172 7A z
123 173 7B {
124 174 7C |
125 175 7D }
126 176 7E ~
127 177 7F DEL