The following data bits $-$

$11100101010101101111$

are to be coded digitally onto a transmission medium using NRZ$-$L$,$

NRZ$-$I, and RZ techniques. Draw the corresponding diagram for each of

the three line coding techniques. Using your research skills, draw a

diagram of the data bits digitally transmitted using Differential

Manchester.

Giving one reason, explain why line coding is used for digital

transmission.