Analysis of information sources in references of the Wikipedia article "Master–slave (technology)" in English language version.
The binary logs containing the changes are shipped from the master server to the slave servers so that they can exactly mimic what the main server is doing
In earlier I2C specifications, controller was named 'master' and target was named 'slave'. These terms have been obsoleted with v7 of the specification...use the inclusive terms: controller and target.
"We found 'master/slave' to be the most egregious example of political correctness in 2004," said Paul JJ Payack, president of The Global Language Monitor.