1 Each term should be used in one and only one way throughout the dissertation.  The easiest way to avoid a long series of definitions is to include a statement: ``the terminology used throughout this document follows that given in [CITATION].'' Then, only define exceptions.
Serial Peripheral Interface Bus. The Serial Peripheral Interface bus (SPI) is a synchronous serial communication interface specification used for short distance communication, primarily in embedded systems. The interface was developed by Motorola in the late 1980s and has become a de facto standard. Typical applications include Secure Digital cards and liquid crystal displays.
Interbus - the Network for Enterprises. What is a Bus? Interbus is a system for serial data transmission which transfers data between different systems/ computers and controllers and which is connected with actuators and sensors, e.g. for temperature control on a machine. Entire production equipment and higher-level systems can be connected with each other quickly, safe, and easily.