To send data in 7-bit ascii codes length, find that it requires the least amount of redundant bit much r = 4; All information must be sent mr 1 = 7 4 1 = 11 bits.
If you want to send the data in ASCII 7-bit length codes shall find out how many Redundant at least Bit r = 4; All information must be submitted at the end of the 7 1 4 1 r = m = 11 bits.
If you want to send the information to ASCII code length 7-bit and take thou unto thee that must be used at least Redundant Bit ~ how much r = 4; will be required to submit all information M R = 1 7 4 1 = 11 bit