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.
1 The interface: This is a kind of bus used to connect the graphics card to the motherboard. 2  The AGP bus is specifically designed to handle high dataflow, which is necessary when displaying video or 3D sequences. 3  The PCI Express bus performs better than the AGP bus that it has ended up replacing.