Labels:text | line | rectangle | diagram | yellow | screenshot | font | parallel | number | plan OCR: 1 0 00 0 (a) NRZ-L (b) BBZS (c) Bipolar AMI (d) Manchester @ 2818 10 00 00 10 Figure 1. A large number of digital encoding techniques are available to design Physical-Layer implementations. Five of the most common are illustrated here.