Serial decoding is working with a string of ones and zeros, typically, and converting the strings of ones and zeros to hexadecimal format. Before decoding became popular in oscilloscopes, the engineer would have to count the bits, actually capturing the waveform data and then counting the bits. Once the bits were counted, the engineer would convert that binary information into hexadecimal with the assistance of a scientific calculator. This was time consuming and very prone to errors. Shown on this slide, the top row of ones and zeros is the binary byte and the decoded hex values are shown below.