Pre-lab Tasks:

1. Draw the labelled schematic diagram of the modified LED display driver circuitry and draw a picture of the breadboard layout you plan to use.
2. Rewrite the program in your previous lab so it uses the SPI interface to drive the LED display. You can assume that the SPI interface is running at 62.5 kHz.
3. Draw a timing diagram for the signal you expect to come out of the MOSI line for each of the 10 possible display values.