0 '\0' null
8 'Wb' backspace
9 '\t' tab key
10 '\n' new line
13 '\r' new line to left enter key '\r\n'
27 'esc
47~57 '0'~'9'
65~90 'A'~'Z'
97~122 'a'~'z'
0 '\0' null
8 'Wb' backspace
9 '\t' tab key
10 '\n' new line
13 '\r' new line to left enter key '\r\n'
27 'esc
47~57 '0'~'9'
65~90 'A'~'Z'
97~122 'a'~'z'