Match binary coding with character or numerical value?
2016-09-28 6:04 pm
It's asking me to match the binary coding with the numerical number 5, but also ASCII character 5? What is the difference and how can I find the answer? It also asked me the code in the binary system for "P" and I got the answer, 01010000. Is that correct? I want to be sure I'm doing the assignment correctly before I submit it. Thanks!
回答 (3)
2016-09-28 6:47 pm
ASCII assigns each number from 0 to 255 a character.
The capital letters start at ASCII code 65, in 8 bit binary that's 0100 0001 (the letter A)
The numbers from 0 to 9 are ASCII 48 to 57.
dec | _ binary _ | _ character
48 = 0011 0000 => 0
49 = 0011 0001 => 1
...
53 = 0011 0101 => 5
...
57 = 0011 1001 => 9
...
65 = 010 00001 => A
66 = 010 00010 => B
...
80 = 010 10000 => P
...
90 = 010 11010 => Z
...
97 = 011 00001 => a
98 = 011 00010 => b
...
112= 011 10000 => p
...
122= 011 11010 => z
...
The capital letters start at ASCII code 65, in 8 bit binary that's 0100 0001 (the letter A)
The numbers from 0 to 9 are ASCII 48 to 57.
dec | _ binary _ | _ character
48 = 0011 0000 => 0
49 = 0011 0001 => 1
...
53 = 0011 0101 => 5
...
57 = 0011 1001 => 9
...
65 = 010 00001 => A
66 = 010 00010 => B
...
80 = 010 10000 => P
...
90 = 010 11010 => Z
...
97 = 011 00001 => a
98 = 011 00010 => b
...
112= 011 10000 => p
...
122= 011 11010 => z
...
2016-09-28 7:28 pm
binary 5 is 101
to get the character '5' just add the value to'0'
character5='0'+5;
to get the character '5' just add the value to'0'
character5='0'+5;
2016-09-28 6:08 pm
ASCII made their own system of number=>character
They could decide on anything. They could have decided:
0=>7
1=>B
2=>9
3=>t
So the binary coding for 5 is just the binary coding, nothing special there. But the ASCII character is the binary coding for whatever number they decided maps to the character 5.
You have P correct. I wasn't going to look anything up to answer this, but decided to just to make sure you understood what was going on.
They could decide on anything. They could have decided:
0=>7
1=>B
2=>9
3=>t
So the binary coding for 5 is just the binary coding, nothing special there. But the ASCII character is the binary coding for whatever number they decided maps to the character 5.
You have P correct. I wasn't going to look anything up to answer this, but decided to just to make sure you understood what was going on.
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