NEW! Buy my book, the best FPGA book for beginners: https://nandland.com/book-getting-started-with-fpga/ SPI stands for Serial Peripheral Interface. It's a very common communication interface used on Microcontrollers and FPGAs. This video shows the basics of SPI including Clk, MOSI, MISO, and SS lines, and how each of them function. Support my Patreon to keep me making great content! https://www.patreon.com/nandland Also get yourself an FPGA board, The Go Board, so you can try this out with a real FPGA! https://www.nandland.com/goboard/introduction.html