master

In the context of a master-slave relationship, these are terms often used to describe a relationship between two devices or systems where one device (master) controls and directs another device (slave) or a group of devices.

Master : A master is a device or system that controls and initiates certain actions or processes. It can send commands, data requests or control signals to slave devices. The Master is the active party in this relationship and determines the flow of events.

Slave : A slave is a device or system that responds to commands or requests from a master device. A slave device can perform various tasks or provide data as controlled by the master. A slave is a passive party that performs actions based on instructions from the master.

In practice, this "master-slave" concept is often used in various systems and technologies, such as:

Data communication protocols: In computer networks and communication systems, one device can be a master that controls communication with various slave devices.

Devices with controlled access: For example, in systems where multiple disks or devices share access to common data, one of them can be the master, which controls access and allocation of resources.

Automation and process control: In industrial equipment and automated systems, the master-slave relationship can ensure the coordination and synchronization of various components.

(It is important to note that the terms "master" and "slave" can also have negative historical connotations, as they remind us of human slavery and dependence. Therefore, in some cases, alternative terms are sought that are less associated with this historical burden.)