The " multiplex " system devised by Patrick B.
- Multiplex Working.
- Grouping of Segments in Multiplex System.
The actual number of sets of apparatus it was possible to work multiplex depended upon the length of the line, for if the latter were long, retardation effects modified the working conditions.
The system brought out in 1874 by Emile Baudot and since considerably developed is a multiplex system giving from two to six channels on one wire, each channel giving a working, speed of thirty words per minute.
In the later years of his life he was engaged in developing a system of multiplex telegraphy.