SPI
What is SPI? What does it stand for?
How does SPI work?
What is the pin type/configuration of SPI pins?
Is SPI asynchronous or synchronous?
How many connections are used in SPI (assuming single master and single slave communication)
What is daisy chaining?
How many slaves can there be?
How are slaves interfaced with?
What are typical logic levels?
What are typical clock speeds?
SPI vs I2C (important!)