八进制
1.A sequence of octal or hexadecimal digits is terminated by the first character that is not an octal digit or a hexadecimal digit, respectively.
4.a positional system of numeration that uses octal digits and a radix of 8.
5.LXT384is a octal T1/E1/J1line interface unit,which is applied in SONET/SDH.
6.Octal (base 8) is denoted by a leading zero in the number and digits from 0-7.
7.Secondly,ASCII codes are changed into 16 bit-binary codes. Then,the higher 8 bits and lower 8 bits in 16-binary codes are transformed into decimal codes,which are encrypted by RSA algorithm. Finally,switch the encrypted decimal to 16-bit binary again,and hide them into the cover text with faking random replacing rule.
8.For example, one baud equals one bit per second in a train of binary signals and one3-bit value per second in a train of signals each of which can assume one of eight different states.
9.A unit of signalling speed equal to the number of discrete conditions or signal events per second. For example, one baud equals one bit per second in a train of binary signals and one3-bit value per second in a train of signals each of which can assume one of eight different states.

